Something is off...

So I used a tampon from someone else because I forgot one and it was a super. I'm a Virgin so it was pretty big and I had to work to get it in but I eventually did. That was 4 days ago and now it hurts down there when I sit and it hurt when my boyfriend was fingering me. I went to the bathroom afterwards and it burned and then today I noticed what looked like peeling skin on the toilet paper when I wiped. My discharge looks normal so idk what's going on. Anyone have answers?