If it is causing you distress, absolutely mention it to your doctor. Please note that while there is thought to be a
genetic component to MS, it is not hereditary, strictly speaking. There is a slight increase of developing the disease if an immediate family member (sibling/parent) has it, but that's about it. Also, please note that the disease course for the most common version of the disease (Relapsing-Remitting MS) is not at all what it once was due to modern treatments.