Doc saidblocked sinus.sudden,bad headache, pain around right eye,rightside nose up forhed,behind eye,temple,achy pressurenow,cud it b sentinel hedache?

You've already asked the same question: Please look for the obvious possibilities, versus the less common zebras in medicine. That will give you better peace of mind. If you truly feel you have this condition, then you need to see your doctor or the Urgent Care immediately. First it's better to work up the more common findings that your condition can be. then proceed with the less common possibilities. Start by callung your doctor.