If this is unusual for you to have that kind of headache, I think you should call your Neuro ASAP, to report it.

You had mentioned the BP fluctuation, and I'm probably just hypersensitive to such thing right now, because I had an unruptured brain aneurysm coiled in Jan this year. One of the symptoms of a rupture annie is "the worst headache you can imagine".

If mind blowing falls in that category, please get that checked out. You may even want to head straight to the ER if it is "the worst...."! Please let us know how you're doing.