I have had fibro for fifteen years. The past few years I get real nauseated with more muscle pain than normal. I don't have an appetite at all. Which is unusual for me. It feels a lot like morning sickness, but I know it's not that. It will last for about a week and then go away for about a month or two. I don't actually vomit. My doctor has never been able to figure this out. It seems to happen more often when the weather changes. Does anyone else experience this?