Help anyone else experiencing this!!

Azaria
I'm 37.5 weeks but baby is measuring a week ahead of schedule! I just got checked and am dilated to 3cm contractions come and go but not to close together at all and not unbearable, I have major pain in my sternum and there is literally a wide bump between my baby bump and my breats all the way across underneath my breasts!! Extremely painful! I was told I have major inflammation of the sternum but this seems beyond that, anyone else going through this idk what to do pains from this is so close to unbearable?!?!?!