welcome to HealthcareMagic Forum’.
yes it should not be take it lightly you need to consult a doctor immediately..
are you experiencing any other symptoms with it like ..
one side of the face being stiff.. eyes not blinking or watering.. running of water out of the mouth while drinking water..numness n tingling
then it can be due to bells palsy
..and you need immediate medical attention so that it helps in recovering faster
wishing you good health