I have a 4 week old baby girl who I changed from breast feeding to bottle feeding two weeks ago. Since then whenever she has a poo she cries and strains as she pushes it out. I've asked my health visitor what to do thinking she is constipated but she said she isn't constipated as her poos are soft when they come out not hard. I've tried giving her an ounce of water to help her but she refuses to drink it moving the bottle out of her mouth. Basically after some advice as its really distressing to watch her struggling every day. Tia