Should I care about body count

I (17M) have been talking to this girl (18F) for about a week. We’ve hung out a couple times and I really enjoy my time with her. Trying to get to know more about her today, I in person ended up asking about her body count and she told me 12. Mine is only 1. When she told me that I feel like I immediately got turned off and a bit sad/disgusted as we were just kissing for the first time. If she could have “been” with so many guys before me then how am I supposed to know anything she says she feels for me is genuine. I don’t really know how to feel or what to say to her.