HI DEEBEEMEE
If this is a another symptoms of MS it could be that but Gerd can be silent in some people you would not even know that you have had it for quite sometime until complications start to arise. feeling there is something in you're throat is one of gerd complications so is spasms and difficulty swallowing .. however get tested to make sure there is nothing else..tumors can also cause this problem. maybe you should bring Gerd up to your doctor as a suggestion and see what he/she has to say ..
Good luck