I have heard too that MS symtons usually go away during pregnancy. I second what tkelly said cause I was dx after my 2nd child was born and never had any problems or symptons before that (that I can remember).
Looking back I think the reason I started with all these symptoms was I got really run down. Maybe people are predisposed to certain things, and if your immune system gets run down they come out. After my baby I got food allergies and some other wierd stuff that I had never had before. I think it was all related to a weakened immune system.
I was always like superwoman going, going, going and trying to be as efficient as I was before baby. I should have rested more, got more help, and just taken it more easy (the heck with the to do list!).
Take care of yourself, gets lots of help, and rest.