Fed up!!

Ok so I been to the dr had transvaginal ultrasound and blood test, everything came back normal except she said I habe hypothyroidism, anywho I have been bleeding for about a month and now its been really heavy for about a week where im passing lots of clots, I told the dr and she put me on birth control to stop the bleeding and so far it's just got worse, im also now on levrothoxine. Ugh just dont know what to do