If you're wondering if the O2 is prolonging your cycle, I doubt it.  Remember the beast can morph at any moment.  Too much Imigran or Imitrex can cause rebounds.  I had cycles that were 7 weeks, others that were 4 and 2.  Some cycles come twice a year, some come once.  So that beast can morph all over the place.  I do believe that rc seeds have reduced all of these factors all together, but that's just a guess.  Furthermore, I'm not going to rely that the seeds for me will work forever because of that "morph" factor.

There has been a lot of discussion on the board over the concern that imitrex can extend cycles. I've been using oxygen for over 15 years, like you my cycles were like clockwork, 2 a year, spring and fall, 8-12 weeks long. Used imitrex for the first time and that cycle went over 8 months followed by a 2 year remission!

Not exactly a double blind, publishable study, but it gives you an idea of how hard it is to establish cause and effect with a condition that feels so free to morph. We have had a tremendous increase in oxygen users on this board, and have not seen a corresponding increase in cycle lenths. My GUESS would be it's not the 02 but just a morph.

Joe