I have lost my virginty at 25 and I an feeling headaches, pains all over my body, and stomach upsets. Is it normal or do I need to seek medical help

I doubt this has anything to do with sex. Are you coming down with a cold or experiencing a lot of stress/anxiety over losing your virginity?

Seek medical help it could be an STD don't be scared these things happen. We all end up catching something sooner or later and you don't need multiple partners to catch one.

Make sure you aren't pregnant, if you are a girl that is

Sounds like the onset of the flu to me. It's going around.

If you're really concerned then see your doctor. We can only guess, only a doctor can give you an accurate diagnosis.