Hi, I'm a 19 year old male in decent health and I have been having discomfort in my heart/chest area. It's very dull feeling but it is definitly noticeable but It's completly painless. I have been having this problem since I believe August maybe since July. So roughly for 3 to 4 months. The discomfort is usually most noticable when I get up out of a chair, when I get out of bed, so about whenever I put stress on my left arm, but it is also noticable at times where I am just sitting and doing nothing. About 2 months before I started having this problem, I started going to the gym daily for at least an hour a day for 5-6 days a week. I Have been told that I might have pulled a muscle on the left side of my chest, but to me this feels nothing like a pulled muscle, it has lasted for 4 months, I would think a pulled muscle would go away after time? Do my symptons add up to a strained muscle?? I did gain a lot of weight over the summer about 30-35 Ibs in 3 months, but I did so purposly as I was trying to gain more muscle by eating high fattening foods and working out profusely. I am now working on losing the weight through diet and exercise and hoping the discomfort will diminish over time. I know I should see a doctor and I plan to If I continue to have this problem, but I would like to hear other people's responses to this subject. Any responses would be greatly appreciated and I thank you for the time.