hi there shabbychic i am sorry to hear about your headaches i had them really badly when i was breg with my son T i had to rest alot and keep my fluids up and sometimes a bit of xtra sugar (hehehe) anyway i was going to suggest this it helped me alot
you know those clear (usually blue) squishy face masks with gell inside them ? i hope you know what im talking about or i will feel stupid ... anyway i bought one of those from a discount shop nearby and kept it cool in the fridge i just pulled it out and lay it over my eyes when the headaches got bad and it was AWESOME !!!
good luck i hope it gets better soon