Punched in the sotmach and i feel really sick!?

Well, there is a chance she broke your rib, which explains the pains, but no the nausea. I recommend going to a doctor and getting an X-ray or at least a checkover to make sure that she didn't do more damage than you think she did. I was once punched on the arm and it turns out my mate fractured my wrist and i didn't realize it :D