Hi all my dd in the past 2 weeks is having the most explosive runny poos, that usually always ends up her back. She is EBF, teething mad but in good form and content after feeds etc. I have been trying to get her onto a bottle of formula at night time but having no luck. I say she takes about half an ounce the one time I try each day. Would the formula be causing the change in poos? Is it normal, if so? Just to add she never really had those mustard seed poos since about 1 / 2 months old.