Thanks guys for all of your advise. i thought it's TMJ too but actually i grind my teeth at night less than before. during the day, i have this imaginary teeth biting feeling (i think...) but i'm not actually biting/grinding my teeth. so my teeth & the side of my head always feel tired... i know i'm stressing out but i don't seem to find a reason to stress about. i'm not working, don't need to worry about money (at least husband still makes enough to provide for us). also, i notice that i get irriatable from time to time.
anway, i will def. go check out the mouth guard. thanks again for all the advise.