There are many different levels of gynocomastia. It IS possible that you have it, just to a lesser degree than a lot of pictures you may find on the 'net. If you're not looking through a PS's site, your more likely to see pics of 'bitch tits' than of the more common 'puffy nipple areola complex.'
Have a look at the galleries here:
If anything, book a consult with a local plastic surgeon and have them have a look. Most often, consults are free, or are a minimal charge (50 or less).