Huge Flesh like clot?

Hello everyone I just have a question for some reason every single month for the last six years I have been getting these very fleshy think clots 3 or 4 times a period. I have been going to the OB/GYN and every single Pap smear that I have done came out good.

I don’t have any sort of fibroids or cysts or anything like that. She says that it’s normal I just had very heavy bleeding and she prescribed me a low-dose birth-control but for some reason my gut is telling me that this isn’t normal has anybody ever had anything similar to this?