My mom has multiple sclerosis, could i have it too?

Unlikely, but: Here is the hereditary risk on your mom's side. The children have a 3-5% chance of also developing ms. However, this is complex, and you would also need an environmental trigger, such as consumption of high fat, high salt diet, cigarette smoking, prior infectious mononucleosis, low vitamin d levels. And of course, the odds are quite low that you will encounter this.

Doubtful: You are at a slight increased risk of getting it. However, it is not a directly heritable condition like, for example, huntington's disease. More likely than not you will not develop ms. Unless you are having distinct neurological symptoms there is no need to undergo a fishing expedition evaluation.