getting an extremely intense headache, right at orgasm is not that rare...
i had a girlfriend that would get them all the time.. i used to think she was crazy / full of it...
then, one day i got an ingrown pimple on my jaw area... it was all gross looking and shit.. i forget exactly what they are called... i think a boil?
anyway, for some fucked up reason, for the duration of the life of that pimple things life, i would get INTENSE headaches right as soon as i busted, i mean extremely fast onset as soon as you nut, then it dies down and slowly goes away, but still remains painful for a little while...
when that ingrown pimp went away after taking anti-biotics, i never felt it again...

fucking weird!!!! wtg god
i bet after your head feels normal again it will go away... likely you aren't fucked for life just yet... fucking weird shit