I had those symptoms & the ER suggested I may have pulled a muscle in my chest (didn't know that was possible) or it could be the way your sleepin on your left side
Maybe ur baby is on a nerve! I get shocking pains in my hips and sholder randomly but I did with my first too! I'm 35.4days and it's not any better with the less room they get! But listen to ur mom and get it checked!
It could be all the presure from the babby our body tends to get cramped up when were pregnant. But def ask your doctor.
Some one please answer :-/