Weird feeling in my stomach and nusea

[michalinakon]

Okay I am aware that sounds completely crazy, and I'm probably (most definetely) over reacting. Two days ago I was at the party and I got very drunk (huge mistake)...I can't remember every detail from the night,but mostly I remember. I remember I was kissing with some guy and he was fingering me (or at least he was putting his hand in my pants, I was stopping him) and that's what I remember, then I left him, because I sobered up a bit. Two days have passed and today I have a bit of a stomach ache and right now I am feeling a bit of nusea. I talked to that guy and he said we didn't have sex or anything and I'm 99% sure that its true, because I think I would remember such a big thing (I am a virgin) and it's not like I don't remember anything from that night. It's just that there still that 1% of me being like 'but what if you forgot?' Again, I know that it's just not possible for me to feel any symptoms literally 2 days after, even if anything happened,but I'm just overreacter and I need someone to tell me that it's not possible.
(You will probably think I'm either really young or really stupid - I'm not as young as you probably think I am, but I'm probably stupid if I worry about it so much)