1yo DD woke up tonight crying and passing lots of gas. She's now sleeping on me and her tummy is gurgling and she's cringing with it. She keeps passing quite smelly gas.
She's been fine all day and hasn't eaten anything unusual. She is already dairy-free as she's cows milk protein intolerant (although we did challenge it recently but stopped again over a week ago).
What causes this? How do I help her?