I need help. I'm having rapid weight gain, about 4 to 6 pounds a month extremely light periods, my belly is swollen and looks like I'm 6 moths pregnant. I have no insurance and very little money. But I have to figure out what's wrong. I've tried diet pills for 3 months and kept gaining I walk for at least 2 hours everyday, and do yoga for a half hour everyday, but I'm still gaining and my stomach keeps getting bigger. Its even gotten firmer as if I were pregnant but have taken dozens of test for the last 3 months, and had a blood test done and they are all negative.