Whenever you have a new symptom or new type of headache it's important to checked out by a doctor; you will probably start with your FP, but do not ignore the headache. It may be from your blood pressure, but it may not; the head pain that I get in that area are from the occipital region; you may try a chiropractor to see if that gives you relief. I'm not a health professional, but I strongly suggest you make an appointment to be checked.
Good luck,
Janice