Multiple Sclerosis and work

Does anybody on this board suffer from this chronic condition and work full time? I saw a neurologist last week and highly suspects I have this. Going to do further testing.

I am also a single mother to a 5 year old boy who is autistic and also has a history of seizures and cp.

The reason I am asking this is because I work in a call center for a big company, great company, and you are required to work at least 1 weekend day a month. I normally work 4x10's; however, due to my symptoms, I am on a medical leave, most likely until end of April. I qualify for fmla next month. Shift bid is coming up in a few weeks. I am going to try and get a 5- 8 hour shift again for when I return. Too much working 10 hour days. I know I will not have the weekends off.

The reason for my post is when I am released to return to work, I can also use the ADA act for accomodations- work schedule, etc. I am in no way trying to milk the system, or want to rock the boat, but with the situation I am in, I am trying to get out of working weekends. What are some of the reasons I could present to my dr when he completes the paperwork to be able to accomplish what I want? FMLA does not require employers to change your work schedule.

I need to be able to take care of my own health issues as well as help my little boy with his own health care and have a quality of life together with weekends off. Before all this came up with my own, we have NO time together, a lot of things besides a life. I will eventualy try and go to another department that does not require working weekends but until then, I need to get them off. I hope this does not sound bad on my part but I know for fact if I ask them to just change it to weekdays only they will not do it- not a business need.