Background: My DD had a fairly severe dairy intolerance, which I finally discovered at around 8 months. While breastfeeding, I couldn't eat any dairy. Her symptoms were colic, stomach pain, and mucousy stools. She became able to tolerate trace dairy at age 2 and full-on dairy at 2.5.
When I was pregnant with my son, I worried a lot about him having a dairy intolerance as well. To my relief, he didn't show any signs of it. I didn't have to avoid dairy while breastfeeding, and when he moved to solids, he ate cheese as a frequent snack, yogurt, pizza, ice cream, etc. However, as a hold-over from my daughter's issues, we use alternative milk in our house (usually almond).
As my son slowed his nursing, I decided it was probably best to go to whole cow milk. We made the change in January, at 21 months.
Soon afterward, he started having multiple loose and mucousy stools a day, and he got extremely grumpy. I didn't make the connection at first because it wasn't on my radar at all. It took 2-3 weeks to realize the association and decide to try eliminating the milk. Sure enough, his symptoms resolved quickly (12-24 hours).
We went back to normal after that (no cow milk, but other dairy products). However, we noticed that the day after a pizza/ice cream night, he had some symptoms. If we had just pizza (no ice cream), he seemed fine. Weird.... he hadn't had problems with this before (pizza and ice cream is our Monday night tradition).
This morning I gave him yogurt for the first time in a couple weeks. It used to be a frequent and favorite breakfast food, but I hadn't purchased any recently. He loved the yogurt, but an hour/hour-and-a-half later, he was screaming when with DH and, when with me, laying down and "snuggle mommy" and sucking on his fingers (his calm-down method). I managed to distract him and the rest of the morning was fine. When he woke from his nap, though, he was poopy. He pooped again <5 minutes later. And then AGAIN <5 minutes later. Both the last 2 were mucuosy.
I'm so confused. Is this a dairy issue? It SEEMS like it, but I'm reluctant to believe it. Why are these symptoms showing up so late? Why do they seem to be getting worse?
Thanks for reading, any insight/experiences appreciated.