hello people....just want to know....have you guys felt this pain on your upper chest(left side) feels like a twitching muscle. i,ve been to my cardiologist, done a lot of tests and everything was normal. he said that it could be stress or anxiety. as i am typing this message right now i can feel the pain though i feel that i am not stressed or anxious. i pretty much get scared knowing that i am a hypochondriac, i think that this is a heart problem that might lead to stroke or heart attack. all in all i am just scared but ive been to the doctors many times everything is fine.help anyone with this pain too???? what could this be????