I found out some stuff about my girlfriends past that I dont really like. What do I do?

So I asked my girlfriend what she has done in her past, ually. We are both 17, and I have done nothing ual with a girl. And I mean absolutly nothing. She said she has given hjs and bjs and was fingered. She has given me hjs and bjs, but I have fingered her. I guess I was hoping that she hadn't done anything before, and I felt like she hadn't. She seemed like she was unsure what she was doing when she was doing them to me. But I guess not. Anyways after finding out I feel slightly different about her. Does that go away? Can I make it go away? Can I forget it? Am I supposed to feel this way? We have been going out for 4 months and we love eachother, and I want that to be the same. But it just doesn't feel the same for some reason anymore. Please help