Dr. Weil seems to think you can have yogurt a couple of times a week
http://www.drweil.com/drw/ecs/pyramid/press-foodpyramid.html
But, I dunno, I am a skeptic about Weil - and about most of these sorts of integrative medicine health claims. Don't deprive yourself of things you like if you don't have to. What does your doctor say about you eating yogurt with your new diagnosis?
Hope you feel better!!