Something is wrong! Help plz!!

So yesterday I put in a tampon and it was uncomfortable (maybe not all the way in) but it was my last one and I was at work so I couldn’t take it out. A few hours after I did take it out I noticed that a part of my vagina was slightly swollen, itchy, and it looked like there was a rip in it. I also had sex 2 weeks ago and the condom fell off but I don’t really think this has anything to do with that. I’m worried because i can’t even figure out which part of my vagina it is and it is itchy. Someone please help