Stomach pains! easy 10 points!!!!?

me and my cousin are having vacation in cape may new jersey. we had some donut holes and that night i had extreme pain on my left side. that morningg i felt better. then we had a few more and soon after my left side hurt very badly. my cousin didnt feel anything though. am i allergic? or is there something going on completely different from the donut holes? pleass help! i dont want this to ruin my vacation! thanks in advanced!