Is this normal?

So when I'm standing and lean back with my upperbody and kind of push my hips forward like this

I will see a bulge on one side of my tummy?! It looks kind of like this from my view (brown things are my feet, I actually dont see them but painted them just to show which view it is haha)

Anyone know why this happens?

I'm almost 1 year postpartum and don't remember having this before pregnancy.

Maybe it is normal, lol could anyone check if it happens to them too?