I'd test again & if you're not Preg go see a naturopath or Chinese medicine practitioner. I had 2 m/c & terrible cycles, was put on vitex by the naturopath to regulate my cycles & it was fantastic. 28 day cycles, fixed my clotting, heavy periods and cramps. I fell Preg about 4 months later and now have my bubba. My friend exact same story but she went with Chinese medicine. Fertile Ground in Melb is where I went. I'd be going to a diff doctor. I swear by vitex it's great!
Good luck Hun