As Mountaindreamer said, your symptoms do sound familiar. It is quite possible that you might be dealing with several overlapping issues, but no one of them has really developed enough to make a definite diagnosis. Unfortunately, this happens quite often. For some, one or two diseases do develop fully and they are able to get a diagnosis. For others, however, they remain where you are and never get a diagnosis beyond connective tissue disease, or mixed connective tissue disease, or undifferentiated connective tissue disease.
Even with these nonspecific diagnosis, a good rheumatologist will treat your symptoms in order for you to be able to manage your lifestyle. So, again reiterating Mountaindreamer, it is important that you find a rheumatologist who is competent, who believes you, and who has your best interests in mind.
In the meantime, we are here to help you as much as we can and to let you know that you are not alone! Welcome to our family!
Peace and Blessings
Look For The Good and Praise It!