(((Kelly))) I am so sorry you are having trouble with all of this. I only have trouble with my left arm. It varies but the spasms in the upper arm are not painful, just irritating as you not only can I feel it I can see it. Additionally, I have sensory issues with my arm. I cannot feel when I burn myself and it takes about an hour for the message to get to my brain that I burnt it, if it makes it there at all. But I can feel a pinprick. I talked to the neuro about this right after Thanksgiving as I burnt myself and we discussed the different pain receptors.
Additionally, as mentioned, I quite often get the sensation that I don't even have an arm yet when I look at it, it is there and functioning just fine. Weird and as Cherie did say, kind of like an amputee that feels things in a limb that is not there.
Also, when I was 1st diagnosed I talked with my brother as it never made sense to me that my leg was numb but I could feel things. He explained that the feeling of being numb but not really being numb was an issue with the brain and a message got mixed up/lost a connection. It was not that I was truly numb. These are sensory perceptions gone haywire. I don't know if I just explained that well but hey, this MS. LOL
I do hope you feel better soon!