What med were you put on? Baclofen? A lot of people with MS take baclofen for spasticity- not sure if that is what you are talking about
? A lot of times a medication can take several weeks to fully take effect, but that is probably something you should ask your doctor or pharmacist. I hope you feel better soon, I know it's hard to take care of your little ones with this going on.
Be joyful in hope, patient in affliction, faithful in prayer (Romans 12:12).