I am 15, I have to loose a little weight, but I am at my average weight class. Since a child I have had a habit at touching my right nipple. Now as I am out more swimming and with friends I have noticed that the one of my nipples sticks out much more than the other. My left nipple is very flat as well. I do not think I have gynecomastia as it does not feel like I have anything that shouldn't be there under my nipple. Could you please tell me what's wrong with me, and what I could do? Thanks!