Had a second thought. Are you mobile? Can you walk under your own power ? If you have limited mobility in walking and sit a lot it may still be MS related but I would still check with a doctor to rule out anything else.
Ren (again)
Lu is right. Swollen feet and ankles is not an MS symptom. Please go to your primary care doctor to have this looked into and make sure it is not something serious.
Ren
Probably not the MS. This is a vascular/circulation problem and not one of the central nervous system