I HAVE PAIN IN THE LOWER RIGHT ABDOMEN THAT STARTED

I HAVE PAIN IN THE LOWER RIGHT ABDOMEN THAT STARTED A COUPLE OF HOURS AGO. THE PAIN WAS REALLY SHARP AND PAINFUL. NOW IT HAS MOVED AROUND AND SEEMS TO BE STRAIGHT ACROSS FROM WHERE IT WAS, BUT ITS IN MY BACK NOW. IT IS STILL HURTING IN THE FRONT TOO, ONLY NOT AS HARD AS BEFORE BUT THE BACK PAIN IS BECOMING MUCH STRONGER. I AM THREE WEEKS POST-OP FOR A HYSTERECTOMY. ANY IDEA WHAT THIS COULD BE?