My FTM fiance has been on testosterone therapy for two years. He was on Androgel for the first year and a few months of our relationship. He switched to injections in July and has had much better results - more facial hair growth, more stable moods, less worry about getting Androgel on me. Oddly, exactly when he started injections, my periods became extremely irregular - from an average 35-day cycle to, well...I had a 101 day cycle, and now I'm on day 60-something, no period in sight. A friend said that she heard from her FTM ex that one of his girlfriends stopped having periods for a time corresponding with his testosterone therapy, but it seems to me that if that were possible, no one dating a bio man would ever have periods. Has anyone had any experience with this kind of issue?