Hello dear Greetings Regarding your symptoms of left sided headache with associated left side episode in the mouth eye and a shooting pain at the left side of the head I am strongly believing that you are gradually developing a stroke(cerebrovascular accident) caused by the following differential diagnosis Hypertensive Hypotension Cerebral hemorrhage Cerebral venous thrombosis Cerebral tumor Post traumatic stress disorder In view of this please check your blood pressure and do the following test Chest x-ray ECG EKG Lipid profile CT scan Meanwhile please see a neurologist specialist with the results and for expect clinical assessment Councelling and adequate drug prescription Moreover please take some analgesic pending your appointment I hope this helps Regards