Happend to me the same way...years of peace then they came back harder then ever before.   A few weeks and I seem to be through it.  I pray it is another two years before it comes back.  Did you ever try the O2?  I can't tell what really worked for me.  I mixed some triptans then started on redbull, the vitamins and O2 all at the same time.  But the cycle ended quickly afterwards.  I was exhasted for a week even after they cleared.

Post what is and isn't working.

Best of luck Jess!
Mark