Dd is 18 months old and still breastfeeds, she has never had any formula. I introduced cow's milk when she was 1 which she was quite slow to take to but is drinking it now but it seems to be bringing her out in a rash and making her bloated. I asked the doctor for advice and she said it was best to give her formula to get her used to it. Does anyone have any experience of this and any advice on which formula to use?