i have a seizure disorder and one of tell tale signs of one occurring is that you have bitten your tongue.
i have quit going to the hospital for them, but when i do, (some unsuspecting nice soul, takes me there) the dr. is always excited when they find out you have bitten your tongue. kinda takes the guess work out of it for them...
i hope you don't have anymore, but mine are now controlled by meds.

good luck and sending safe hugs