Had my period for over a year!

So I'm 23 years old and I had my period for a year straight and then it stopped for 2 months then started again and won't stop. It's always heavy and nothing helps it. I've been to multiple doctors and they can't figure it out. I did have Mirana in for 2 hours went into shock and had to get it removed because the stupid doctor punctured my uturus. I think the reason for all the bleeding and not being able to get pregnant for the last 3 years is because of that. I have one doctor saying its pcos but I don't have any of the symptoms of that or cysts on my ovaries and I have another telling me that the wall of my uturus is thick so I'll need treatment to help get pregnant.what do you guys think?