Due to unavoidable family issues I will have to be away from my four month old DD for 3 days (can't take her with me). She is ebf but I can't express nowhere near enough for 3 days. If she were to take formula for three days what would happen? Would her stomach be upset? Would she be OK going back to the breast? She takes the bottle find for expressed milk although she only has this on rare ocassions (after 3 months it became so difficult to express I gave up on it a bit).