Breathing problems?

Anyone else feel like they aren’t getting in as much air as they used to? Almost like there’s not as much room for my lungs anymore? It’s hard to explain. Just a weird feeling when I breathe. I had this with my first baby too but not until I was like 35 weeks pregnant which made sense because there was LITERALLY not room for my lungs. But now I’m only 8 weeks so could it be the same thing?

EDIT: I’m not getting winded. Just feels like my lungs aren’t able to expand as well