WOW! Greta,
What a way to find you have MS and to have such a strong family history of MS. It was only 8 years ago that neuros universally thought there was NO linkage of MS in families. Surprise! Another revelation we patients taught the almighty neuro community.
I don't think you should worry about having children and them being affected by the MS gene. Probably by the time they would even get any type of diagnosis there very well be a cure for it through stem cell research or genetic engineering. Don't let this stop you from the joy of having children. They are such a blessing..................and challenge!