Can I have a tic and not have tourettes?

I recently was discharged from the PBMU and over the week I was there I developed a few tics. Not verbal but definitely noticeable. A head twitch and wanting to tap something with my wrist. I only tic when I am agitated by noise, lights, overwhelm, and sudden movements. Is it possible I have tourettes? Can I have tics even if I don’t have tourettes?I would also like to know how I can try and get control of it with school starting. My grade isn’t the best of friends when it comes to previous mental hospital patients.