Chest pain?

Jennifer • 35yo, SF Bay Area. Photographer. Married 2 years. Had a beautiful son 8/07/15.
So this is like the sixth time in a few weeks that either I'm lying in bed or sitting on the couch and I get this band around my chest and pain that starts in back and radiates to the front center of my chest. It's excruciating. It lasts about an hour and comes in quick waves. I feel like I'm having a heart attack. I told my doctor but she kinda blew it off and said it could be anxiety or acid reflux... However it happens when I'm calm and not even close to after I eat etc. I have a history of heart issues in my family and my dad and his brother both had major heart attacks last month a few weeks apart and I have 3 cousins around my same age on same Side of family that have had major heart surgeries. Also, pregnancy increases a woman's heart attack rate by a huge percentage. I called labor and delivery last night and she was so rude to me... Just said to go to the ER if I'm worried. I've been to the ER for a migraine and they send me to labor and delivery because I'm pregnant. And they charge me $50... But then always tell me to go to labor and delivery. Ugh. No one is taking me seriously and I'm scared.  Anyone else having this intense chest pain? I'm talking a very sharp pain in center of chest and around the back.