My DD is almost two. Her father has a sensitivity to dairy, like if he eats too much cheese he gets a stomach ache, he usually gets his lattes with soy milk, etc. I'm not sure if this means he's actually lactose intolerant or allergic.
When I was in the hospital after having DD, my milk wasn't coming in and DD was losing too much weight. I didn't want to give her formula, but the nurse called the pediatrician and insisted we supplement. I did BF, but also used formula from then on because my supply was pretty low. We had to use Similac Sensitive, or the store brands equivalent. Enfamil Gentle made DD scream like she was dying on the inside. Poor thing. I never really noticed her getting sick if I ate dairy products, but I like soy milk too and would substitute it a lot in my own foods.
At the 12-month mark, when we could try giving DD cows milk, she had a bad reaction. A few times since, she's gotten sick off dairy. I once gave her a taste of my yogurt because she had it before and didn't get sick so I thought it was okay. She had diarrhea, stomach cramps, and a diaper rash the next day from it.
So anyway, I'm not sure whether she's lactose intolerant or allergic to dairy. I just stay away from milk products because I don't want her to go through that kind of pain ever again. Any ideas, suggestions appreciated.