i think you mean "orgasm" not organism. there is a condition that you can research called orgasmic headaches and the person that may be able to help you with this not-so-uncommon condition with be a neurologist that specializes in headaches. try putting "headache and orgasm" in your google search engine and read the medical sites that will be found.
when i try to have an organism i get a severe headache. this has been happeing for 6 months to a year now. i'm not able to have an organism due to the severe headache that comes on right at the time i'm about to. the headache stops the organism! do i need to see my doctor? it makes the top of my head fill like it's going to explode. i don't masturbate to often so i don't think that's the problem. at my age i don't have sex to often either. i have to say that this has become a concern for me! the first time it happened it freaked me out and it still freaks me out!