Hi There. I Am A Patient Currently Under Investigation. I

Hi there. I am a patient currently under investigation. I have a past medical diagnosis of M.E/C.F.S & Fibromyalgia. In January this year I instantly fell from raising from my sofa, lost around 80-90% of feeling in my right whole leg. I felt numb and lost use of it. Eventually over the course of months the feeling has some-what returned but it still feels abnormal. I walk funny, I have jolting sensations in it and odd prickly/warm tingling in it and I get instant leg muscle fatigue when trying to walk. From seeing a locum neurologist his findings where as follows; Reduced power in leg 4/5 and in arm 4-5/5. Brisk ankle & knee jerks and plantars are down going bilaterally, decreased pin-prick sensation on the right side of the body up to T7. I am going to have a MRI head & spinal scan, they did suspect MS before but past MRI's were clear. This is the 1st time this has every happened and it is worrying and effecting my daily life. As far as I know, the Neurologist is only going to perform the MRI's and no further investigation which is worrying as something is clearly not right. I must add I have a MRI recently on the LOWER spine to rule out stenosis and it was clear, could you please provide you opinion?