Before we can be of much help many of us will want to know what the doc says. Hope you have someone with headache experience for many, many folks find the quality of care with this problem to be lacking. So, please get back with both the doc's diagnosis AND what he has prescribed.

In the meantime, might like to read this overview of CH and see if it rings any bells....
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Cluster headache.
From: Multimedia File Viewing and Clickable Links are available for Registered Members only!!  You need to or (Orphanet Journal of Rare Diseases)
[Easy to read; one of the better overview articles I've seen. Suggest printing the full length article--link, line above--if you are serious about keeping a good medical library on the subject.]

Leroux E, Ducros A.

ABSTRACT: Cluster headache (CH) is a primary headache disease characterized by recurrent short-lasting attacks (15 to 180 minutes) of excruciating unilateral periorbital pain accompanied by ipsilateral autonomic signs (lacrimation, nasal congestion, ptosis, miosis, lid edema, redness of the eye). It affects young adults, predominantly males. Prevalence is estimated at 0.5-1.0/1,000. CH has a circannual and circadian periodicity, attacks being clustered (hence the name) in bouts that can occur during specific months of the year. ALCOHOL IS THE ONLY DIETARY TRIGGER OF CH, STRONG ODORS (MAINLY SOLVENTS AND CIGARETTE SMOKE) AND NAPPING MAY ALSO TRIGGER CH ATTACKS. During bouts, attacks may happen at precise hours, especially during the night. During the attacks, patients tend to be restless. CH may be episodic or chronic, depending on the presence of remission periods. CH IS ASSOCIATED WITH TRIGEMINOVASCULAR ACTIVATION AND NEUROENDOCRINE AND VEGETATIVE DISTURBANCES, HOWEVER, THE PRECISE CAUSATIVE MECHANISMS REMAIN UNKNOWN. Involvement of the hypothalamus (a structure regulating endocrine function and sleep-wake rhythms) has been confirmed, explaining, at least in part, the cyclic aspects of CH. The disease is familial in about 10% of cases. Genetic factors play a role in CH susceptibility, and a causative role has been suggested for the hypocretin receptor gene. Diagnosis is clinical. Differential diagnoses include other primary headache diseases such as migraine, paroxysmal hemicrania and SUNCT syndrome. At present, there is no curative treatment. There are efficient treatments to shorten the painful attacks (acute treatments) and to reduce the number of daily attacks (prophylactic treatments). Acute treatment is based on subcutaneous administration of sumatriptan and high-flow oxygen. Verapamil, lithium, methysergide, prednisone, greater occipital nerve blocks and topiramate may be used for prophylaxis. In refractory cases, deep-brain stimulation of the hypothalamus and greater occipital nerve stimulators have been tried in experimental settings.THE DISEASE COURSE OVER A LIFETIME IS UNPREDICTABLE. Some patients have only one period of attacks, while in others the disease evolves from episodic to chronic form.

PMID: 18651939 [PubMed]

well all like i said not too sure but i just got done about 10 min ago with another, it is not within my normal time frame but i had a beer in the garage with a friend working on the old tractor and about an hour later i was telling him it was time for him to go i had to get in the house. i just made it befor i hit the couch in agony. i cant wait till monday!!!!! god bless my wife for taking care of me. the only thing i got is hot and i mean hot rags. that is the only thing i got here that helps. heat anf lots of it. cold it the worst it even hurts like hell to switch the hot rags around. so for now im gonna try and eat dinner and get some sleep i hope. but i can never tell. my god how on earth have you people delt with this for so long. i just started and im ready throw in the towel and say you win stop punching me in the head now. what ever i did to someone or something im sorry.

Hello and sorry your hear but no better place to be on the web.
Please keep us updated on what your doc goes with for diagnosis and treatment.  It took me years of wrong diagnosis before I found a doc who sent me to a neuro who finally diagnosed me.
I find alcohol has different effects on me sometimes a beer will trigger sometimes it wont. I think it depends where I am at in my cycle and I only try a beer at home with the o2 close by. I get daily nightime hits anyways so sometimes I will have a beer to attempt to trigger one then use the o2 to abort and then I will sometimes miss my nightime one completely. 
Heat was my best asset before o2 and would spend my nights in a hot shower banging my head against the tile. Sometimes still do when the o2 does not abort the attack. Learn what works for you and do whatever it takes to ease this pain. This site has been the best support for me and so much useful info is found on it.
Keep on keeping on and keep us posted,
Brian

well it is about 20 after 9am here and i feel it coming on. i hate this. it is really affecting my job now. i just got some instructions from my boss and i gotta get to work but its coming and there is nothing i can do about it. when it comes im down for the count. i cannot function at all. OK than it getting hard to type so i will be back later.

thanks all for the support. so i got some news from my family doc,,,,,,,,yep i got it. no fun. while i was in the waiting room i could feel one trying to come on (if that makes since) and i got in sat down and was telling her what was going on. se was looking at me and said are you in pain now. i said yea a little but it will be worse soon. she ran out the room yelling for o2 and came running back in with a tank and told the nurse to put it on the highest setting. which was 15 im assuming 15lpm. been reading up on o2. and sure enough about 5 min in it was going away. nice. so to make a real long story short. im at the right place.so now i have a prescription for o2 adn for imatrex,,,,,we will se how it goes. now i have a question too. she wanted me to do the injectable imatrex but i asked if there was an alternative and that is when i got the nasal version....did i screw up or are they both affective? i cannot see myself injecting????? i got a needle thing ya know. but on the other hand if i pull out the needle and pass out before i inject there wont be any pain,,,lol just kidding im just kinda happy i got help and sad that i got to deal with this forever. so im filling in a calander to track my clusters to see what my schedule is. i hope it ends soon and dosent start back up for years but, we will see...............thank you all

Just an after thought....you really are lucky she knew what to do.....
   I once had an attack at a doctors office, and they called an AMBULANCE!   on the way to the hospital, they gave me O2, and by the time I got there it was over....so the ER doc thought I was just plain NUTS.!

   Told me to quit smoking, and sent me a big bill for the Ambulance.        jeepers!       lorac

Wow Glad you got the help you needed and fast!  Count your blessings some here weren't so lucky.   I got lucky because I already knew the neuro I go to now and he knew immediately upon hearing my symptoms what the problem was.

Imitrex nasal is affective if you take it at the 1st sign of CH attack and before your nasal cavity clogs up, if you are clogged up on one side use the other.  The nasal takes longer to work and isn't quite as affective as a shot but as a back up it'll do.

After putting up with the pain so long you'd be surprised what you'd do to get rid of it and FAST, I have both the nasal and the shots and use both regularly. 

You may need to print some material out from there to show your boss, there is a link here somewhere "letter to employer and friends" can't remember where now...Will look and post link for you if someone else doesn't beat me to it 

Eureka I found the link...
Multimedia File Viewing and Clickable Links are available for Registered Members only!!  You need to or

PFDAN's to you!

   When I could still take Imitrex, I prefered the injections as they work much better than the nasal type. Don't worry about being afraid of a needle. You can't even see the little bastard, the injector looks like a felt pen with a button on one end. You just press it against an arm or leg and push the button. Then just hold it there for ten seconds. I've done it in 45 foot seas with one hand on the wheel. Couple of minutes later the CH is gone. Damn as much as I hate needles, I miss those things. But after three open heart surgeries they won't let me have them anymore.
   O2 is a wonderful thing when you get a chance, buy a Optimask and a 25 LPM regulator. You'll have to haunt E-Bay for the regulator.
   Stick around we still need to talk about preventatives. Like Verapamil and some of the other drugs that can keep the beast from your door. Nothing beats not having a CH if you can manage the trick. And it sounds like your Doc is willing to work with you. Which is a rare thing you lucky  O2 sucker.
   Welcome to the maelstrom, let me know your mind.

well all the 02 has been working wonders for me and i got a new prescription for imitrex injectables,,(gulp) and havent used one yet. lol. but today i go to the neurologist and see what they have to say. i am uncertain as to what tests they are going to want to do but, im game. i have also been arguing with the ins co since they say "you should only need 6 doses of imitrex per month" like they have any clue!!!!!!! no,,,,,i only have 3 to 4 ch's per day i can just tough it out right,,,,,,,i am beginning to not like my ins co.... but i think i am getting to the end of my cycle, the shaddows are less and less and the 02 works better and better and shorter too. i hope this will be a long remission when i get there but it still likes to get me out of bed at 11:00 every darn night like an alarm clock,,,,, maybe i should find a 3rd shift job hahaha. i have also begun chatting with someone from here that lives about 10min from where i work. so im hoping to have a meeting for lunch with them. Hooters is just down the road.lol. too bad we cant have a cold beer together. that would be fun. also lastly i live real close to chicago,,,,,i may come to the convention sounds kinda fun.......a little Leary being i met you all off the computer but still fun to talk with some of you all. thanks again
Tye

Hi all, I'm very new to this site, but am already very grateful for it.  I was reading a lot of the other messages and stumbled on to this one.  Did someone say something about a CH gathering in Chicago? I live close as well.

If your mask has holes in it, you might want to get one of the non-rebreathers off the ch.com store. Hopefully your cycle is nearing it's beastly end, but good to have your aresenal stocked for next time.

well, i have been very busy,,,very busy with all the darn test they are running me thru. so im gonna try and keep it short. i had slept one night with an blood oxygen meter on my finger one night, had some blood test, an EEG and an MRI,,,,,whew,,,all have come back good accept they found some water retention pocket scist in my nasal cavity. there are 2 one is lamely stated behind my left eyebrow and one on my nasal septum. they think that they are fine and may have some cause to my HA's. but today i am going to a ear nose and throat spec. for a scope of my nasal cavity,,,,,sounds fun huh,,, but that is all i got right now on this so this is yet to be determined as a "root cause" idk why but they think it has some bearing on my condition. but also on a lighter note my cycle has stopped for a week today,,,,,,oh glory full sleeeeeep all nite once again. it is a much needed catch up too with all the doc and hospital visits and not to mention work. but till later PFDAN's to all!!!!!!!!!!!!