first try to avoid junk foods , alcohol,smoking dust ,excessive noise, stress ,try to have sound sleep.do regular exercises ,paricipate in recreational acivities.If the headache still continues ,continue the above said things and take paracetamol 500mg bd or ibuprofen 200mg bd along ranitidine 150 mg bd for 5 days .inspite of these if headache not relieved you need higher level drugs and some invesigations which willbe given by a family /general physician