Sorry nic, you have longer to deal with this than most.
I took up acupuncture towards the end of my second cycle, but i was not doing it long enough to tell you if it made much difference. My acupuncturist assures me that it did!
I took panadol, then if it got worse panadeine forte, then if it got worse i took Imigran which is a super migraine drug. I know you want to stear clear of more medicines, but some days you just need to have a clear head for a whole 12 hours.
I'm sorry i have no more natural therapies.
Good Luck
Jo