Possibly. Could be stroke, seizure, tumor, or other abnormality. You should get some immediate attention and evaluation.
Go to ER. If you are having any symptoms of stroke, go to the hospital immediately. Call an ambulance. Do not try to drive yourself. If there is a hospital with a acute stroke program nearby then go to it. If your symptoms have resolved you should still go. Transient ischemic attacks can be followed by stroke. Take your symptoms seriously!