Twitching is it normal?

I always remembered twitching, ever since I was small. I am 15 right now and it still happens. Back track: when I was 5, my aunt and brother noticed I jerked my head like I was saying no, a lot. I remember feeling like i had to do it to make the pressure go away (not hurt, it's like having a feeling that you should itch something) and I stopped for a short period of time. In Sunday school, same year, I would extend my neck forward, and I remember the teacher askin me about that. Then that stopped for good. Never came back, but I do something similar, tilt my head up and open my tonsils (feels stretched). And my jaw had spasms, where I would have to click my teeth to make that feeling go away, like an uncomfortable feeling. There was also my eyes, I would blink a lot and sometimes squeeze my eyes shut. Happens often. That has been the most noticeable. The teeth clicking got on my dads last nerve. I also furrow my brow a lot, and raise my eyebrows. Example: I will furrow, then I release and raise my eyebrows/forehead. It hasn't affected my life too much so far, I do have other spasms inmy face , except I think with other children. I remember being hurt by my best friend who left me out because I twitched. One of my teammates also noticed the blinking, my excuse was having something in my eye, and my mom pointed that out to my eye doctor and he said it was from TV or computer use... It happens even if I don't use them! Any suggestions? Sorry about the format/grammar!