Appendicitis?!

Okay Saturday night my boyfriend and I got into a fight, my stomach was upset all day so I didn't eat, that night I ate and instantly after I threw up, and where my appendix is hurts so bad. Thought it was nerves but we are ok now and I didn't eat for two days after because constant headache and stomach upset, well I can eat now but today my side and stomach hurt so bad, my headache isn't terrible but I'm just nervous that's what it is Please comment