What does it mean if my bra keeps riding up my boobs?

I’ve been wearing a 32B VS push up bra through out my pregnancy and it literally rides up my boobs like I always have to pull it down bc half my boobs are hanging out... does this mean I go up a cup size or band size?? I know I need to go bra shopping but idek what size I am anymore

Edit: thanks guys I’ll try to go down on the band size and stay a B because there’s no way I’m a C cup my boobs are still tiny 😂😩