Yes, I Am A Almost 50 Year Old Women, In

Yes, I am a almost 50 year old women, in good health normally, well today I got a sharp shooting pain in my abdominal area, stop me dead in my tracks, it went off and on for about 4 hours, Now I feel like a how I felt after I gave birth. I plan on making a Doctor appointment first thing tomorrow, What could it be?

Thank you Dee Jemente