Hi All, My 10 mth old is BF and eats really wel...

Hi All, My 10 mth old is BF and eats really well. Although he seems to vomit soon after eating yoghurt. I have tried different types of yoghurt but still have the same result. He eats cheese fine, no vomiting. Just yoghurt it seems. He does have the occasional small spewsy just at random times. But it's a lot more when he has yoghurt. Anyone had any experience with this? I'm just concerned because I would like to wean him straight to cows milk after he is 12 mths but am afraid it will do the same to him.