I can not tell you how many times I get pain in my left arm, my neck, chest pains, nausea, and dizziness. For so long I thought each time that I was having a heart attack. Turns out, after having numerous tests, that it was just my anxiety. I still get it but I don't worry that it is a heart attack anymore. I just tell myself it is my anxiety manifesting itself in physical symptoms and that I will survive like I always have and it goes away. However, you should get checked out just in case, sometimes a bad gallbladder can cause heart attack symptoms so I would see a doctor just to make sure. Hope that helps. Good luck and know that you are definitely not alone :)