I was diagnosed with Fibromyalgia before I had children. It was recommended that I take Paxil. The doc (at the time) said that it would help me though he said that they didnt know why. I was like, "ummmm thanks but no thanks."
I have suffered from sleeplessness due to nightmares since I was in my early 20's (Post traumatic stress).
This was many years ago and I dont really have much to add except anecdotal experience. I never took the drugs because I wanted to start a family. I went back to being active regardless of how uncomfortable I was and only slept soundly due to the exhaustion of pregnancy/child-rearing.
Once I was able to sleep and became active again, ALL symptoms of Fibromyalgia disappeared.
I am not suggesting you become pregnant, lol. What I AM suggesting is that you find a way to get sleep. Lack of sleep will break you down in ways that you hardly notice until all at once one day you are depressed and aching all over, barely able to function. I believe that it is a vicious downward spiral.
I havent had any nightmares since I got married and began living with my current husband but I still have trouble sleeping. Seroquel is a drug that I have found to be most helpfull but I do want to try NOT to become dependent on it.
I dont know if my info has helped. But I tried. If you have any questions, I will answer them to the best of my ability.