Will my Gynecomastia go away at 19 years old?

Thank you for sharing your question. Unfortunately without being able to feel your chest tissues it is difficult to render a definite opinion.  If the tissue you feel is glandular and firm and has persisted for over a year it is unlikely to fully resolve on its own and you may need a revision procedure.  If the tissues are softening then I would favor closely monitoring it to see if complete resolution takes place.  Hope this helps. 

Tough to advise based on the information that you are providing. I would need to know more before being more accurate.  However, as you are still changing I would advise you to wait till you are about 22-24 yo to see how things are  then.  Let your body sort things out before you do any surgery.  Hope this helps.