I've had migraines since I was 14; I'm 52 now. With menopause my migraine patterns have changed.

About one day a month, I am completely exhausted for no particular reason. This has been going on since I started menopause and it could just be menopause related. But I'm a year post-menopausal now, and still get these days. This last Saturday I realized that my day of exhaustion had some things in common with my past migraines: I was always prone to let-down headaches on Saturdays, and both my migraines and this unexplained fatigue would sort of clear up on their own around 8:00 at night.

I want to emphasize that I don't have a headache on these days. However, I'm wondering if they might be some sort of migraine equivalent.