a journey of a starless night

i am having jaw pain
don't know whether it's because of the joint itself or the muscle
i realize that i've been clenching my jaw the entire day
like i'm under stressful condition

and i can feel my facial muscles contracts too much today
because of all the smiling and laughing

am i a bruxer?
and i am very sure that i am stressed out
this psychological problems of mine have to be treated
or i'll end up having major depressive disorder