(Concern) Teeth grinding

I didn't realize until now because I was sleeping alone.

Sometimes, when I go on trips with my family or when something good happens together.

I heard that I grind my teeth.

I'm trying to get it fixed now because I heard my temporomandibular joint is getting worse.

Should I wear a mouthguard or should I go to the hospital first?

I'm curious if anyone has tried treatment for teeth grinding.