Why am I still bleeding?!🙄

Literally just how a couple of past months have been. When I started my period I was bleeding 24/7 and thrown on bc to stop it, after that stopped working I ended up going to the depo shot, was on it for 2 years & been off it over a year now. Still not regulated & finally got a dr that did something to see why. Bloodwork came back that my thyroid levels are high so I’m on thyroid medicine now. But ever since coming off the depo, for awhile I never had a period finally was having something but only a couple days a month. Had a possible chemical in July and now bleeding like this🙄

Is this normal with thyroid?