you are right to look at diet, nutrition and lifestyle first. Get your body in the best shape, and you should have a good pregnancy.
The things all these plans (Swank Diet, Best Bet, Dr. Wahls, Jelinek, etc) agree on is to make sure your vitamin D levels are good. Zinc and magnesium are also important minerals that balance vit. D. Eat a plant-centered, lowered fat diet--all whole and organic foods. Some say remove gluten, or legumes, or red meat....but whatever works for you and your body is what's best for you. Make sure to move every single day. Don't smoke or drink. Try to learn how to deal with stress proactively....thru exercise, meditation, yoga, prayer. Again, whatever works for you. Make sure you get plenty of antioxidants from colorful fruits and vegetables (the more color, the better!) Find time to laugh, see friends, don't live in fear.
Here's the best news---you may very well not even have MS! Some people who have migraines, or vascular events, have small lesions like yours. And every day you spend worrying is a day you won't have to enjoy. Jimmylegs has great nutritional and supplement advice....maybe PM her if she doesn't pop on. These lifestyle changes will help your body prepare for pregnancy and motherhood, no matter what.
Be well, Rach---
Husband dx RRMS 3/07
dx dual jugular vein stenosis (CCSVI) 4/09