My mother in law doesn't want me to breastfeed my baby?

Tell her you dont wana talk about this subject anymore, and if she still continues talking about it than walk out or wash dishes, well basicly pretend you cant hear her. Yes breastfeeding will be painfull for the first week, but remember you cannot give up, you have to be patient, theres classes for breastffeding moms you can go to, theres oitments to releave pain, theres all kind of sources to help breastfeeding. Ask your doc. When you have your baby you need to breastfeed and prove to your mother in law that yes you can breastfeed and that you love it and wouldnt change anything in the world for it, your da only one that can change her mind about breastfeeding.