i dont know where to turn. i have had this headache for 3 weeks know. had a very bad headache that lasted like 3 seconds, it was like being punched in the head. i went to the ER and a ct scan was done and showed up normal. was sent home. went to my doc 2 times and he will not run more tests, says its stress. since that 1st headache i now feel a pressing pressure on top of my head. it feels like someones thumb pressing. it comes and goes. in the mornings i am fine. later in the day it gets bad. more annoying than painful. i am just worried about it. could this be serious or is my anxiety taking over me? please help.