I am a 29 year old female. For the past year and a half I have been experiencing random chest pains. They start with a choking feeling in my through and then a tightness in my chest followed by a burning/stabbing sensation. Everytime this happens I get a rapid heart rate and palpitations. I have been to the emergency room 3 times had an EKG, bloodwork, 2 week holter monitor, MRI of the spine and brain. Everything has turned out normal. 

I am at a loss doctor put me on zoloft which just made me feel numb and then he tried viibryd. I am currently not on any medication other than xanax when needed. Can anybody help. I have 2 children and cant barely keep up with them when this happens. It is effecting my daily life and every time it happens I feel like my heart is going to explode....Anything thoughts or ideas are greatly appreciated.