Yes both the temporary heart pains ( and many other organ pains) happen and pass while fasting but for me they also happen in general in my life as well. I feel that since i'm fasting i'm a bit more aware and conscious of the discomforts since i'm already so uncomfortable.
As for the hair, i'm on a fast right now and for the first time that i can remember my hair does seem to be coming out a bit more than i recollect, then again my hair is getting longer after buzzing it so that is debateable.