I've been having sharp pains in my mid to lower right abdomen for 3 days now, its on and off, what could it be?

Sharp abd pain: May be medication effect. Could be something like appenicitis brewing, or pelvic infection, so you should see your doctor to check this out.

?muscular?intestinal: Intermittent pains in the abdomen could be muscular, pelvic or intestinal from gas or inflammation. Since the appendix and right ovary are in the right lower abdominal region , persistent discomfort in that area warrants an examination by your md.