I suppose I'm nervous because I know that now I have to get back to work on the grant proposal.
Maybe time to see a doctor and get prescription meds for when I get these?
Edit: It's only when I have a lot going on but feel like I have it all under control that I get the headaches. (That, and non-stress related causes like dehydration, sugar, or barometric changes.) If I'm panicking because everything is down to the wire and I don't know how I'll get it all done, then I don't get a headache. Obviously something in my subconscious is doing this, and I'd really like to have a long talk with it and see if we can work out some other arrangement.