What Causes Pain In Perineum?

My perinuem hurts, what couls be the cause? I think it just started 2 days ago, it started hurting outside my vagina and my perineum and a little bit on the side of my anus. it hurts when I touch it and it feels uncomfortable when I move. I used to have stitches on there because of giving birth. its in that area where it hurts, and I don't know why. I haven't been having sex so its not that. I was thinking maybe the toilet paper we use but I don't know.. please help!