hi i have been having chest pains lately , i had and ecg in Febuary 2013 , December 2013 , January 2014 all have read normal , my oxygen levels from the vitals were 99% the pain feels like a dull throbbing on the upper left side chest by the breast bone i have been diagnosed with costochondritis and also have anxiety issues which the syptoms feel like heart attacks this morning i got a sudden throbbing pain on my left side alone the pain was very distinct and i could feel my heart beating fast in my chest it lasted for about two to three mins i get scared and think something is wrong my doctor doesnt want to give me medication for anxiety and told me to control my thoughts , i dont get pain with excercise i feel totally fine , sometimes fatigued and grumpy is this the anxiety and if so is there any supliments i can take to ease the syptoms all i am on is painkillers i am 31 yrs btw