I bumped my temple a few days ago. it only hurts if i touch it, but afterwards i have a slight throbbing headache. what should i do?

Throbbing headache.: To be on the safe side, go to the ER and have your trauma evaluated

You could: Take tylenol (acetaminophen) or use OTC topical analgesic to your temple or you could go to ER and get evaluated for concussion/ intracranial bleed depending on the force of impact or your neurological symptoms like dizziness or focal deficits

Don't touch it: Rest. Drink plenty of fluids. Avoid vigorous exercise. Try to avoid touching your temple. Take Tylenol (acetaminophen) or Ibuprofen if needed for pain. It may be tender for a while be should heal completely in time. If your symptoms worsen or do not resolve after a week, you should be evaluated by a physician.