This past Thursday at 4:00 in the morning (its summer, I stay up late) I was masturbating and then I just stopped (didnt reach orgasm) so I just layed down on my bed. All of a sudden I heard a wheezing/squeaky noise coming from my heart for about 2-3 seconds. I thought it was my stomach or something else at first but I felt it in my heart and it matched the rythm of the heartbeat. Then I started to experience pressure in the chest, shortness of breath, and a pounding heart. I was really scared and got very anxious. My instinct was to take an aspirin and drink water. These symptoms lasted for over 45 minutes. I went to sleep an hour later, (still with the discomfort and shortness of breath). The following day went better, but I instead of the discomfort being in the chest, I now feel it right on my heart. Today, I still feel the same discomfort in my heart but no shortness of breath or pressure. What was this caused by or what happened to me? Im a healthy 14 year old! If this helps, that day of the incident I was very inactive, in bed all day. I first thought this could have been angina or coronary artery spasm but the symptoms have lasted way too long and Im started to get scared.