L.J.
My mom has fibromyalgia. She was diagnosed with it when she was 13/14ish somewhere along there. But she still had three kids, did daycare for awhile in her home, went to college at night and managed the day to day stuff.
I don't remember my mom being sick when I was younger but I know as my sisters and I got older mom would spend a day or two in bed and so it was up to my dad to take care of us (which was always interesting because he can't cook. Well he can cook oatmeal and that is the only exception).
Mom had her great days, her good days, her not so good days but she could still hide how she is feeling days and then the days she just didn't want to move. It happens.
Fibromyalgia affects everyone differently but if you want to have kids and be a good mom you still can be. Don't let the fibromyalgia control you, you control it.