DaisyB it is well know fact that emotional lability (heightened and unstable emotions) is a factor in ME/CFS as it also is in menopause so we get a double whammy. Happiness, excitement, anxiety, sorrow, disappointment among others, are all heightened and we can yo yo between emotions in the space of an hour. The slightest disappointment can send me off course so this situation with your employer will not be good for you at all but what can you do? Does your company have a union you could get to support you?
Have you looked at the ME Association? I will PM you the link as not sure what links can be posted on the forum x