Pieces of flesh TMI HELP

Alegría

Ok so I restarted my birth control so I know that my body is going to react funny and my period is going to be messed up. However I just went to the bathroom and noticed that I have little pieces of what it looks like rubbery tissue with blood. I looked it up and everyone said it’s HPV. I hope not. I’m concerned. Anybody have an idea what this may be ?