someone please help!

Rosie
My little one is 3 months old. For the past week I've been having bad bad chest burning and numbness and burning in my left arm. When this happens I get very light headed. I cry and I'm so scared of being alone with my child. I'm literally driving my family and boyfriend crazy! I feel like I'm having an heart attack. I've had blood work done it's come back normal so has my EKG. Also my chest X-ray looked good. I have a fear that I'm not going to be around because I feel like I'm having attack and I fear not raising my child when this happens? Does anybody else have this?! Is it PP?