Social anxiety disorder - Diagnosis

For me, Camron, I've had countless times when/where I would be in a panic, scared, not able to look up, be hot, sweaty, unable to breathe right, fidgeting more than I already do, which is a lot. Even more so, it triggers me most when I am by my girlfriend. We've been dating for a while now, and yet, I am still anxious around her. I don't know if this is something that I was born with, if it's trauma, or a gene thing, but it has heavily affected my teen years so far; and yet, I am only a year into this. As a 13 year old, I hope that the sheer amount of time that I have to fix or resolve this, will be enough. My mother and sister have mild social anxiety, but I believe that I have it worse. It mainly started up in 7th grade, and I'm going into highschool august. If there is anything that anyone could point out that can help, please, help.