Pretty spot-on guess! I do have relatively high blood pressure, typically in the 130-150 range.

Doctors have suggested it before but since I am borderline I don't really need to be on meds yet. I think it sounds worse than needing to take pain killers occasionally.

I was borderline. Higher bp increases your risk of stroke. I figured the headaches were a warning.. I could be wrong about that though.. I take a very low dose ace inhibitor and it works great. Doc said it wasn't a permanent thing necessarily.. I could probably go off of it if I was more consistent with the DASH diet and exercise more and drop 15-20 pounds.

Keto diet supposedly helps drop the bp too but diets are really hard to maintain and stick with.