Bells palsy is a temporary issue and recovers within 1 to 2 months. One side of face muscles stop working or becomes noticably weak. Happens due to sudden exposure of cold environment, generally.. (like blow of air-conditionin or blow from window while travelling).
Next Steps
physician may give you anti cold drugs. and meet a physio therapist near by. take facial stimulation and learn facial excercises. you may find them on you tube, as well. just search bells palsy excercises.
Health Tips
avoid cold environment. fo excercises several times a day. do some warm water application on face. get well soon