Rhythmic moving

Sofia

For the last weeks I been randomly feeling this repetitive thudding movement in my lower abdomen. I of course went to google and it said it is most likely my stomachs pulse. I tried accepting that answer but I just know that this thudding is way to strong, as even my partner can feel and see it. And in between these thuds, I feel my baby’s normal kicks and movements. Which feel like two completely different things.

In the back of my head I feel like my baby is having seizures but I know that is super rare and is also most likely not the case. Has anyone else experience a rhythmic thudding movement?