I'm trying to figure this all out, too. I'm 47, have been having peri symps for the last 6 months or so, migraines (which I never had before) some hotflashes, and plenty-o-snarlyness. I was still cycling, although somewhat irregularly....started Iodoral at the end of June and then realized I'd skipped 2 periods until last Sat when I started 'rusting' like you previously described. I stopped taking everything then, but plan on starting back at 50mg next week.
Looks like several of us gals should keep good records of what we're taking, how it's effecting our cycles or menopause, etc. and keep posting about it.