I'm 31 weeks and having a really sharp pain right under my left boob not sure what I should do been having the Braxton…

I'm 31 weeks and having a really sharp pain right under my left boob not sure what I should do been having the Braxton hicks contractions really bad. I'm started to get scared that the baby is about here and I'm nowhere close to being ready. I don't know if I should be going to the er or not with this pain I can't cough without it putting me in tears