Struggling with Fibromyalgia and Fatigue

I'm hoping that there are some people here who know what I'm going through. My husband is (quite rightly) mad at me because twice in the last couple of weeks I've left the iron on, and it's been on for a full day. I've never done this sort of stuff before. My fatigue and brain fog is getting the better of me, I can't drive for more than half an hour without having to pull over because I'm falling asleep behind the wheel, and my job is over an hour away when there are train strikes (which is all the time right now). I had to leave a social event to go and nap in the car the other day, it's so embarrassing! I've called the GP and they're switching me from fluoxetine and gabapentin to duloxetine, has anyone had luck with this? My main condition is fibromyalgia