Hi, Abbey, and welcome! The muscle pain, twitches, electrical feelings, fatigue, etc. are symptoms of fibro but can be symptoms of other illnesses too. These definitely need to be ruled out before a diagnosis of fibro is given. It looks like you are on the right path to a diagnosis! There is a thread on Fibro 101, that Chick mentioned, called What Else Could It Be and it lists other illnesses that have many of the same symptoms as fibro.
Most of us wake up very sore and stiff. If you sit or lay too long with fibro, you will be stiff as a board and have more pain. We can have pain most anyplace on our bodies but most have upper back, shoulder, and neck pain...along with more stuff. I've never had tremors and I don't believe they are part of fibro. You possibly could have fibro and something else because many of the symptoms you mentioned definitely sound like fibro. There is also a list of symptoms in Fibro 101 and you just might see yourself there.
I'm glad you are going to see a rheumy. Get a good one and one that treats fibromyalgia patients. Believe it or not, there are still doctors out there, including some rheumies, that still think this is all in your head. If you don't get satisfaction there, you might want to see a neurologist. We have several members that see neurologists, too. I'm not a doctor but this is what I would do in your situation.
I know this is a frightening time for you but I have lived a full and enjoyable life in spite of fibro and the other health issues I have. We are here to help you. Just keep searching and you will find the answers.
I'm really happy that you popped over here. Don't hesitate to ask questions and I hope to hear more from you soon.
Forum Moderator/ Fibromyalgia
Fibromyalgia, Crohn's Disease, Ostomy, Diabetes, Autoimmune Inner Ear Disease, Osteoporosis
God does not give us a spirit of fear, but of power and of love and of a sound mind. 2 Timothy 1:7