I have had my heart looked at all is well.....however i am still having chest pains and when i do anything i het real clammy and sweaty and naseated?

Heart evaluation: When you say you had your heart looked at, what did they do? Just an ekg? That's not enough. With your symptoms you should probably have a nuclear stress test. Heart tests can be false negative at times. A heart cause is very possible and needs to be fully ruled out. Other causes would be lung problems with low oxygen, deconditioning, depression, h pylori infection of the stomach, acid reflux, etc.