<s>[INST] I have a really sore abdominal on the right side. It was worse yesterday and I ended up fainting. I don't know if it was because i was so scared it was my appendix. The paramedics didn't know what it was and didnt take me to the hospital. What could it be?? anya [/INST] Hi and Welcome to HCM, What is your pulse rate?  Do you have extreme tenderness (when you palpate your abdomen do you get pain), whether you have pain in right iliac region.  If its in right upper abdomen it may be liver or gall bladder problem, middle portion it may be due to renal colic, lower portion may be due to appendicitis or amoebic colitis. Do you have fever.  Whether stool normal?.  Do you have constipation.  My recommendation is do x-ray of abdomen erect view, ultrasound.  Wish you speedy recoveryThank you </s>