Is it just me??!?

Sooo I'm still a virgin and I haven't had any boyfriends yet ( I'm in high school) and even though this is a far fetched topic/idea I still tend to think about how I'm going to lose my virginity and when, I'm pretty sure it's going to be in high school, but I feel like no guy would want to have sex with me in a way... I mean I'm pretty attractive or whatever but as I look at all these other girls I feel as if I don't compare, for example I'm a skinny girl but my tummy isn't flat and I have stretch Marks on the side of my butt whereas all the other girls have flat stomachs and literally ZERO stretch marks and I feel like everyone says "oh you're so skinny you'll be fine, don't worry about it.", but my shirts cover up my belly. Idk, it's just a thought that crosses my mind here and there.