Thank you all for your replies. It's really difficult to talk to him about how it makes me feel. I left his house and went to my mom's (they're divorced). I just started seeing a psychologist and I plan on having her tell my dad the crippling effects gynecomastia has on my life. I think he'll start to realize it's more serious. He said he'd refer me to his "friend" doctor who happens to be a surgeon. I'm planning on not talking about it anymore with my dad and waiting to see the surgeon. Although, I'm very nervous because this doctor is a general surgeon with a specialty in rectal surgery :O (can you believe?) I understand how important it is to have a good surgeon, so I'll use his opinion as a diagnosis and hopefully have the opportunity to find a surgeon who has experience with gynecomastia.
As for the degree of my gynecomastia...
It's significant. It's not as big as some, but I am lean. It affects my posture and causes extreme chronic neck pain/headaches. I'm in high school and don't have one friend. I developed social anxiety as a result of the gynecomastia. I can't even walk to the front of the classroom to get a tissue if my nose is running. Similar to everyone else's stories, I cannot wear the clothes I want to.
I cannot take another year of this. I can't even take a month more of this. I read online about 4 years ago that it would most likely disappear in a few years. I've been waiting 5 damn years and it's not about to go away! I'm tired of living like this. I'm pushing myself so hard to finish the last days of school. I have big dreams for the future but none will ever happen if I have gynecomastia. The question isn't if I'm getting surgery. Simply put, if I don't, I won't have anything to look forward to in the future, just more misery. Still haven't told my mother.
Thanks again for all your help.