Can’t breathe on right side

Cindy

I’ve been having this issue for a while now and I’m 20wks. It’s only when I’m laying on my right side but it feels like my left lung is being crushed. Makes me want to cough. Sometimes it helps if I actually lift my left boob up but I’m not “huge” - DD cup at most. Kinda at a loss for what to do cause I’m not gonna be able to lay only on my left side for the next 20wks... anyone else having this and/or know what’s going on?