a predicament of our gender

I used to think - together with most of men probably - that when a woman refuses sex while the argument is her headache - it must be a lame excuse, mustn't it? well maybe because of that I'm now punished for having these annoying and sometimes unbearable migraines 2 to 5 times a WEEK!
Interesting is a fact that according to the literature I was raised with, migraine is considered to be a malady of aristocracy women... Then it wasn't easy to identify with a woman who goes to her bedroom to rest because of the migraine attack. Well, now I'm so with you, girl. Sometimes I have a migraine for 2-3 days, which make my life a complete suffering. So, will I want sex in this situation?! Don't think so!!
The unfair thing is that this phenomenon is mainly the predicament of women, so for a man it must be difficult to understand it how really bad you can feel while having a migraine. The farther the worse: when the attack lasts pretty long, you also feel nausea, you can't stand loud sounds or bright light. I'm not trying to quote a medical encyclopedia here, but actually I'm asking - why in hell do we women "deserve" such a pleasure?! Aren't we good with having this nice guest every month and carrying a baby for nine?!
They say migraine is caused, among other things, by chocolate, cheese and stress. Well, I'm trying hardly to eat less of those, but how am I supposed to avoid stress when it keeps haunting me in a variety of forms?
Any suggestions are welcome.