I have really bad anxiety with no medication (parents refuse and I’m 15) and my therapist said I have GAD. 
Side note: my therapist ditched me so I have no one currently. Looking for a new one though
Recently my joints completely lock when I have panic attacks and it’s horrible. I get really scared. They hurt a lot. I don’t know what to do. The first time it happened my whole body locked, even my jaw and everything. My hands and fingers twist in a weird way. For this reason I’ve been really trying to push all my anxiety attacks down but I’m scared it’s going to come back a lot worse. I’m scared and I don’t know what to do.