C section pain 18 months later

Hi everyone. The last 3-4 periods have started being a little bit painful. My uterus feels like it’s aching all day long the whole time I am on my period. When I stand, it’s like my abdominal muscles hurt. It’s right near my c section scar (which would make sense because that’s where my uterus is!). Does anyone else have this? My c section was 18 months ago.