Severe chest pain while pregnant??

Brittany
Am I the only one who's having a lot of problems breathing when they're pregnant. Right underneath my bra I have constant pains every day it feels like a lot of pressure. I even went to the emergency room and they said everything's fine and it's just typical first trimester. It's starting to get to the point where I don't even want to get out of bed and unfortunately I'm supposed to be looking for a job right now. Just wondering if I'm one of many having these problems