Sheesh, miss Boiler, I sure hope not, but there are worse things. It sure sounds like every symptom of MS, i've had, but yes, there are mimic diseases.
Having or not having lesions on your brain, do not rule out MS. You may have them on your spine. An MRI is just a DX tool and there is much more testing to be done to rule MS in or out.
Take a deep breath and come along with us in your DX process. We care.