hi i have read that heating the cows milk can change the structure of the protein. so would i be ok using uht milk? i am only asking as i had some of my sons uht milkshake a few days ago and other than being a tiny bit grumpy my baby hasnt really reacted. whereas when i had cows milk or soya milk she was really rotten and screaming for days and nights, watery nappies tec. thanks in advance