Internal vaginal tear/cut (please help!)

Georgia

So I had rather rough sex and didn't notice any pain, but when I got up a couple hours later to pee I noticed it stung like how cuts do. I looked into my vagina with a mirror and couldn't see anything. So then I had sex again the next night (technically this morning) but after we were done I was bleeding a lot. My partner is very big and we were being kind of rough. I can see the tear inside of me. I called the urgent care but the nurse I spoke to was useless and basically said they wouldn't do anything for me. All the bleeding has stopped, there isn't really any pain, this is about 7 hours after it happened. Idk what to do, I'm very freaked out. Obviously I won't be having sex again till it's healed, but how do I prevent infection up there? Will it heal properly? I'm just freaked out because I feel like this should be taken more seriously but no one is taking me seriously