Pain under the ribs
Hi - not sure if this is the same thing, but when I was pregnant with DD I had something like this where it felt hard to breathe and there was some pain behind my ribs. My aunt who's a nurse told me to try raising my arms over my head as that can help to open things up so I did that and it really helped it go away.
I think if you're in a lot of pain it might be good to contact your care provider just in case to make sure it's nothing. I hope it goes away soon for you!
Hmmmmm...I have had this but attributed mine to mindbogglingly bad heartburn. Does it extend around to your back?
That said, I'm 23/24 weeks (who knows at this point lol) and have had LOTS of various pains in the last week as the baby starts to make more room for its growing weight and length.