Hope you start feeling better, Christina.
My aunt also has fibro and I can tell you it is not easy just by watching her. (She was undiagnosed for like 15 years, before they even knew it existed.)
Anyway, you're not a burden. Everyone has time when they need to rest and get better. Just take care of yourself. Hopefully the system will pass and you'll feel better physically which will help you feel better mentally, too. I'm sure it's not easy on the mood to go through all that pain.