chest pain

before Wednesday once in awhile I'll feel a tightening on my left side of my chest like in my heart that day I decided to eat a whole pineapple and do some squats to help induce labor I usually never do squats ever since Wednesday I started getting a pain in my chest when I raise my voice breathe deeply swallow anything drink anything .. now today the pain is just a constant aching on left side where my heart is I don't know it's because I overworked out or it could be something else and I should go into the ER I've gone twice before to the ER last month so I've been hesitant to go again and be sent home for nothing