Red Bumps? I'm a virgin, so I'm pretty sure it's not...

Hello. I'm a seventeen year old girl and I have noticed that I have two bumps. One is on the inside of my upper thigh and the other is around my pubic area. They are both a little bit smaller than a dime. I've noticed them for about two days now. They aren't painful, but they do itch really bad. They're both red and the one on my thigh had a discolored [whiteish] center. When pressing on the one on my thigh, it feels like it has something hard underneath. I've tried to pop it - but nothing has worked. I'm a virgin, so I'm pretty sure it's not an STI. I thought they may have been bug bites, but I'm not sure.