Thanks for sharing your results with progesterone.
I wanted to cautiously suggest magnesium supplements, or eating foods high in magnesium. It is known to help headaches from what I have read and I have found that magnesium has a definite help on my MG, in fact my MG is much more mild since I started taking magnesium supplements and have since switched to a diet high in magnesium. I recommend looking into this vitamin. Since I started taking magnesium (or eating magnesium high foods) I have had no pain or discomfort associated with my monthly period. I have no doubt this is due to the magnesium.
Magnesium is a vitamin that one must be cautious taking with MG, so do some reading and talk to your doctor first.
If you do decide to take supplements, be sure to get the correct form of magnesium, the magnesium oxide form found in most vitamins is pretty much useless.
Here is a great thread on this forum to learn about magnesium.
http://neurotalk.psychcentral.com/showthread.php?t=1138