endometriosis
"I've been on the pill form (Provera), 30mg once a day for almost 15 months now and have gained nearly 100 lbs. I kid you not. My doctor thought it was my thyroid but it was not. All of my hormone levels were normal when tested. It has to be the medicine. It has a bad reputation for weight gain and I have never struggled with weight in my entire life before getting on this med. I was put on it for endometriosis and ovarian cysts, but I am going to talk to my Obgyn about switching to something else because I am almost positive it at least contributed to my rapid weight gain. Like others said, I am also tired all day every day. Very little energy. I haven't gotten a period since a month or two after I started taking it. Not worth it though."