I am 20, and I am 5'7 about 145lbs, with small Gynecomastia now sometimes my Gynecomastia gets smaller, but I don't know why? then some days they seem to get a little bigger. They are not noticeable in public or embarrassing, they just make me feel fat and uncomfortable. I first thought it was because I was taking Mega Man Vitamins, then I thought I was loosing weight, but I don't know why it seems smaller some days, and larger other days. Please explain