Hello, Sir/ ma'am. I'm 23years of age, and my problem is that there is persistent mild pain in the left side of the chest. Sometimes it goes away, and sometimes it comes. It's not a serious nature of pain that is affecting my daily life, but it's there. I'm not overweight my height is 5'6.5 and my weight is 67.8kg, and I do exercise on alternate days. Because my exams are going on so I sit for long hours. If it helps in forming any conclusions. I will be thankful to you if you look into my problem.