Originally Posted by J_9
It is always best to see your doctor when there is something going on that lasts more than 48 hours.
It sounds as though it may have to do with your sciatic nerve, but to be sure consult your health care provider.
Is the pain actually in your pelvic bone and then into your leg or is it in the actual abdomen, I agree with J-9 but have you also consided SPD (symphisis Pubis Dysfunction) it's mostly common in pregnant women but hormones, body stress or injury in non-pregnant women can also cause this.
Go to see your doctor they will be able to advise you better.