Pregnancy oddity, just me or anyone else experience this?

Vanessa

All three pregnancies,especially the further along I get whereing pants makes me feel like I can't breathe. I take my pants off an I can breathe. Its wired. It wasn't as often or as bad my first pregnancy more often with my second but my third I'm at 29 weeks and I can get through work but the min i am in the door they are off.