I know we always tend to blame ourselves and our lady hormones for stuff like this, but are you absolutely sure that it's your fault that you're feeling this way? You say you're "happily" married, but as many of us know, day-to-day life with the same person for many years can be very challenging at the best of times. I've been married for over two decades and I've had times where I could have quite easily walked out and not looked back. My husband can be lazy, he's a male chauvinist pig who thinks that housework is a woman's job, and he's a grumpy bastard at times. We've had to work at staying together, I know that I'm not easy to live with either. But just because you're feeling "off" with your husband, doesn't mean that it's a hormonal issue with you.
I'm not saying it isn't, but just don't be too quick to blame yourself!