Yes, finally a topic where I can diagnose illnesses. xD
I say it may be acid reflux. I got it about a year ago and it gave me the worst stomach cramps. Try taking Ziritech (sp). It helps with it. Take nice hot baths, hot tea, and chicken soup. I'm not a doctor. But I do play lots and lots of Trauma Center. xD<-Highlight the sentence behind this.
Another thing to take into consideration is appendicitis. Symptoms include:
•Nausea
•Vomiting
•Fever
•Loss of appetite
•Pain toward the left side of the body
If you have any of the symptoms, contact your doctor *coughDr.Stilescough* ASAP.
I am so sorry for two reasons. 1. I probably sounded too show-offy and 2. I still have no idea what is wrong with you.
Feel better soon!
snickerpie
P.S.,
About the party... if it's moderate to severe, stay home. If it's mild, take it easy. Eat very little, and don't participate in any physical activitys (swimming, tag, etc.). That's all I have for you.