I started taking
Phentermine in May 2016. Worked well for the first 3 months, I lost
30 lbs. No problems with my period at all. I have been on Microgestin fe 1/20 for years now. Then I hit a plateau and didn't lose any weight for 4 months. I finally decided to take a month off the pill to give my body a rest, well went I started taking Phentermine again just last month, my cycle was ending. A week later, my cycle returns and its extremely heavy, terrible cramps, and huge clots.