IS MY RETAINER BROKEN?!?!?!?!?!!?!? helppp!p!!!!?

OKAY SO I WAS FREAKING CHEWING ON MY BOTTOM RETAINER LIKE I TOOK IT OUT. I HEARD IT SNAP AND I LOOKED AT IT AND IF U LOK AT A CERTAIN angle u see a tiny line (the crack) it didnt move and fits perfectly. is it ok? oh and the top one a tiny very unnoticable piece broke off. you cant even telll. i think my retainer is fine? right? RIGHT>!!!?