Help!! I'm in so much pain 😔😣

21wks... In the past few weeks (usually late at night) I have started having discomfort in my ribs & chest that very quickly turns into excruciating pain and makes it nearly impossible to breathe. Then I will start throwing up & having diarrhea. I've been to the E.R & by the time they actually got to checking me out (1.5 Hrs after I arrived) it was over with. Idk what to do but it's got to stop. It's not the baby in my ribs I can feel her kicking really low ... please help 😣😣