Hey beezie1955,
I had something simillar back in Feburary. In my case, the pain sort of shifted from the top of my stomach to the side, with it hurting more when i would stand. My stomach also hurt when I would bend my leg towards me. After a few days of this pain, I got a scan done and turned out it was appendicitis! Due to my AA and low platelets, instead of removing it they treated it with antibiotics, and I never had to get it removed
Not sure if you have the same thing, but its worth getting it checked out if it persists or seems to be getting worse!