@jadeshelley , you need to understand the cause of the pain, before you can treat it. The following might help :-
Try and talk to your MS Nurse about this. They should be able to help find some treatment/therapy for you.
However, as an expedient, if you feel the pain is neurological, you could try applying some Magnesium cream on your legs. This is available “Over-the-Counter” (OTC) at your local pharmacy.