Previous c-section moms— electric shock feeling in belly

Ji

Hi. I’m 18 weeks now and noticed for the past week or so if i am laying down or sitting and try to sit/get up (I guess using my ab muscles) I get an electric shock through my stomach that totally makes me stop what I’m doing. I’m assuming this is related to post c-section changes (my son is 21 months) and a growing belly. Anyone experience something similar?