I'm the same age and I feel three same way. I feel powerless against my anxiety. It just gets worse and worse. Im supposed to go to this big rock concert on the 30th and usually im always nervous before a concert but recently i can't enjoy it anymore. I'm just so scared, i constantly feel like I'm going to die or something bad is going to happen :/ the base vibrating through my body gives me a panic attack and it never used to do that. Mind you ive attended this same concert, every summer for years. Pray and wish me luck. Fingers crossed, i hope that I'll have fun instead of having a freak out.