How's the baby doing? It certainly must be a lot to handle which two young children at home. Some people with MS have a relapse after having a baby. But it sounds like the testing you've had so far doesn't provide any clues toward MS.
When you mentioned the sharp pain when you have pressure on your wrists, it reminded me of when I was diagnosed with carpal tunnel syndrome. I had tingling and numbness in my fingers and definitely experienced shocks in my hands at times. Just a thought.
I hope that you are able to find answers. Sometimes the journey to an accurate diagnosis can take a very long time. For me, it was over five years.