Hi SPS,   I can relate to you, i been going trough the same stage and am only 19 one time i woke up an my heart hurted well am not sure if it was the heart it was a pain on the left side maybe under the breast or lower so i would breath and it hurted to take a deep breath so it would hurt a little and go away i was tryn to switch position to how i was laying down and it hurted more, i a just went to sleep and wen i woke up it was gone ,am quiet worried ive read alot about heart attacks and it makes me sad plus i dont want to cry because it hurts more, also sometimes when i laff hard the pain comes. Its really scary though they say theres no such things as mini heart attacks. So now am thinking of talkin to my doctor and you should to, were still young and have a hole future.   -Griselda