Is this normal??

I had sex for the very first time last night with my boyfriend. It was really sore after we finished, and the pain hasn't gone away. There's no burning or bleeding or anything, it's just really sore and it feels tender to the touch when I try to touch down there. I think it's because I was being stretched out so much, his dick is REALLY big and girthy (9 inches). But is it normal that the pain doesn't go away? It's nearly been 24 hours and it's just really really sore and it hurts when I walk or wipe when I pee. I've taken painkillers and washed my whole body in the shower. Any advice or help?