Sharing Our Innermost Thoughts

Is it normal being bothered by your partner’s past. Like if i tell you the full story, I was with this girl once, she was my first girlfriend to be honest, and it was a long distance relationship, it happened in sept of 2020, i met this girl through quora and we talked and liked each other a lot. Eventually we became really good friends helping each other out through everything we can, we were both good in studies, and one day I proposed her and we were in a relationship, now about two months from that, we were playing truth and dare in our friends group on telegram where i got to know about her past physical encounters and it turned out she had a body count of 5, and she have informed me about only one, and also she had done things like one night stands too. I know, I know lot of you guys gonna say it’s none of my business and that’s all past, she’s not doing anything as she’s with you, and i agree with that and that’s why i never talked about it with her, but i know that it bothered me a lot, and the thing about those physical encounters was that she always had or you can say performed oral, idk her choice ig, but whatever the main thing here is i felt really bothered by that discovery, to the extent that i got some disgusting image of her in my mind and whenever we would be talking or like just spending time together all of sudden that will cross my mind and my mood will be off, i will be feeling anxious and there was this thought always coming in my mind that if she was into these one night stand kinda stuffs before, what stopping her from doing all those things now, after all it’s now like we meet everyday or lived in the same city, and that thing bothered me so much that i became insecure, but somehow we broke up after few months, reason for breakup(so that you guys don’t start blaming it on me) was that ke her ex texted her out of blue and all of sudden she started having a feeling of suffocation in our relationship and we ended things. Now that was my first relationship and i was 20 then and she was 19, and i was and still am a virgin maybe that’s the reason it bothered me so much or idk, so my question here is, Is it normal to feel that way? to have those kinda thoughts. Like if speaking honestly I feel that it shouldn’t bother me as all that was past and it had nothing to do with me and after all almost all the guys she became physical with were her past boyfriends so i guess it should be normal in this age, as nowadays it’s pretty normal to do all these things right. and after all it’s her body, that’s also one reason, anyways what are your thoughts on this matter.