Hi have you not had heart scans? Eg echo or ECG? As this doesn't sound good with pain in the place where it is, I'd get them checks done first! But as to your hand my father had the same problem after he had a heart attack a few years ago, I now know he wears a splint on each hand and this stops it altogether, but I don't know what his problem is I don't know if it is carpal tunnel, maybe sqad will shed some light, I only know what I do from my father but he did complain of waking and his hands were alseep so they gave him splints to sleep in, (google that if you don't know what is) but I'd certainly go the doctors too,it's there job to find out what's wrong and mither them until they definitively tell you what is wrong!! Just before you go maybe write down all symptoms and how they feel,I know myself I go to the doctors and forget the symptoms and have to guess from memory but if you write them down it helps the doctors, hope this helps and isn't just babble :) and hope everything goes okay!! Al