I noticed that when I stand and sit down repeatedly in a close time, I start having belly pain to the point that it's hard to walk and sometimes laying down or standing.

I'm not sure if there is something to help me with this problem. I really need something that can help me. I can't sit around all the time. I have an 18 month old baby, and he is at the time of exploring, moving a lot, and getting stuck a lot.