Stomach Flu (maybe?)

So for two days I have had some stomach pain. The first day I noticed these symptoms, I basically had this pain all day. I was throwing up all throughout the morning and basically slept the whole day. I was faint and dizzy, usually unable to stand. My body temperature was a little lower than normal and I would experience chills or overheating. The second day, I was a little faint in the morning and just had stomach pain (but then again I did not eat much that day either). I didn’t have much of an appetite. Are these normal symptoms of a stomach flu or should I be worried about something more?

I’m kind of active with my boyfriend, but we don’t actually do it. I might just be paranoid because all we do is dry hump with very little clothes and I am just worried. I’m still young and I don’t want to worry my parents.