In the tape I got when I signed up for Dr. John Lee's newsletter he recommended to a pregnant lady that she use natural progesterone. It has eliminated my migraines and I thought I would have to eliminate myself if they kept up. He said it would not harm and would likely even help with the pregnancy as it contributes to healthy growth and immunity. I ordered my progesterone through the www.goodbyepms.com site's link to a doctor that sells it without any additional chemicals or unecessary and possibly harmful herbs in a natural grapeseed oil base. I have it auto sent each month because I can't stand the thought of the migraines coming back. You can read how they are frequently hormone related on that site. Also chemicals we are exposed to in our cleaning products and personal care/cosmetic products act to increase the imbalance of our estrogen to progesterone levels by acting like estrogen. There's an awful lot on info on that site but it is worthwhile reading and you can also call the doctor that sells the progesterone and he will give you a lot of info too. Hope you're better soon!