What is your daily routine. I mean  what you do  or what activity you are going to start in  that particular time frame. Any way any associated symptoms like nausea ,vomiting,  evening rise of temperature to be ruled out. Any h/o loss of appetite  and wt. Loss? Type of headache like throbbing type , streching type or bursting type? Any h/o weakness in any body part?  You also get u evaluated for  hypertention which can be anxiety induced , situation specific or it may be idiopathic?  Serum TSH also needs to be evaluated. Stress managementband relaxation exercise can be helpful. Better to consult a neurologist.