Hello, I m 17 years old and I have very heavy periods. I use tampons a lot. I ve never had a problem before today.. I started getting these sharp pains.. Like different from cramps .. Then while pulling a tampon out, it hurt so bad. It also hurt when I had to .. Poop. I keep getting these pain that last for a few seconds then leave. Also, when I sit, I feel the pain. Please help.