Severe headache sensitivity to light had it since 4 am and its 1:14 pm took tylenol (acetaminophen) and its not working. Any advice?

Common migraine. Your symptoms sound like a migraine, (the severity, and the light sensitivity), and tylenol (acetaminophen) is likely not strong enough to treat a migraine headache. Resting in a dark room, may help, but you may need to see a doctor for a stronger medication.