Unilateral throbbing headache is one of the characteristic of Migraine. But it’s usually associated with photo and phono phobia, nausea and often followed by vomiting. Duration of headache usually more than 4 hours to 72 hours. Intensity of headache is severe enough. Emotional stress, some environmental conditions, some specific foods, smells can precipitate migraine. Family history of similar headache is positive in many cases. But only one or 2 episodes of throbbing headache may not be migraine. Also You have not provided adequate history.