HELP!

I had the implant put in in March due to my periods being extremely painful to the point I couldn’t walk and would spend about 2 and a half weeks bleeding. I took the pill along side this to keep it at bay advised by the doctor. She told me to then try and come of it after 3 months. On Wednesday it was the 3 months so I stopped. Today I got dressed ready for school and went to the toilet there was barely any blood but the blood that there was wasn’t what I’d call my usual ‘period blood’ it was more like when I’ve cut something type of blood. But there was a bug clump that I’ve never seen before I don’t know how to describe it but it was like if you were to cut the skin inside your mouth it wasn’t very big but it was quite large. I put a pad on just in case, and went to school. When I got home there was about 4 or 5 of these clumps that looked exactly the same and with a little more blood. I don’t know what to do and I’m not sure wether it’s something I should be worried about. Have any of you ever experienced it before or know what it could be or if it’s related to the pill and the implant?