Possible causes for lower abdominal pain?

I have been having some lower abdominal, it could almost be considered pelvic, pain for the last couple of days. I don't feel sick, no vomiting or diahrea, but a lot of pain. It isn't continuous, just comes on sporadically and rather suddenly. I haven't seen a doctor yet as I am living ina foreign country and don't speak the language. I am just wondering what it could possibly be.