Hi! I am 5 5, female, 117 pounds, and 16 years old. I have had intestinal surgery at 6 months and I do not have appendix. For the past month, I have had consistent diarrhea, stomach pain (stabbing feeling), and my lower stomach area has been throbbing on the left side. It is worse sometimes, other times I cannot feel it. I went to a doctor and they felt it was a virus, but it has not passed.