Hi there. I'm 30 and 33 weeks pregnant. Over the last 10-15 years I have had random moments where I get a sharp pain on the left side of my chest behind my left breast. It feels to me like a sharp pain in my heart but it usually goes away with deep breathing. My family doctor has said it's muscle spasms in the past. Since I've been pregnant, I've had the same thing happen. Once it lasted two hours and then gone. Yesterday I was in the bathroom and jerked up suddenly. A few seconds later I've had the same pain. Needless to say it's been constant since yesterday at 6 pm and it's now 12 pm EST. Unsure if I should be concerned or just wait it out until Monday and go see my family doctor. I have no other symptoms than a pain in that area that has gone done from the sharp pain I originally had.