Hi, Sherrie! Medications can cause fatigue and so can being overweight. I was quite overweight and started counting carbs and lost 85 pounds and have kept it off. I feel so much better now and have a lot more energy than I did when I was lugging that extra 85 pounds around. I don't know how my body handled that. So this might work for you. It's easy to do, you can eat anything you want to in moderation but always count the carbs. If you want to know more about what I did, just email me and I'll send info to you. There is a little envelope under my name at the left of this post. Just click on it and it sets you up to email me.
Another thought would be to be checked for diabetes. That can make you exhausted, too, and feel very weak. Being overweight can bring on early onset diabetes, too. So, you might want to ask your doctor about checking you for that.
I hope you have had a chance to read Fibro 101. There is a wealth of information in that thread and you will learn a lot there, too.
Good luck with your doctor's appointment and do let us know what you find out because we do care about you!
Sherrine