Awwww, RB! Sorry about that. I am woefully behind here (worked 8 days straight and only popped on the computer briefly and sporadically -- trying to catch up a bit tonight).

Mixed episodes suck! I'm really sorry you're having one and wish I had some helpful advice...
It's entirely possible it could have set off a headache. There is certainly tension in the mind's dynamic at such a time. Guess it wouldn't be surprising if the body had a physical response to it.

Good idea to check in with the doctor on both fronts. Did you? In trying to calculate time, you posted.... Friday late night there? Brain's a scramble, sorry(!) Whether it's Friday or Saturday or whatever day, give them a call, ok? And please check back in here to let us know how it's going for you, ok?

Lots of and I hope it lets up on you soon, RB!