my 13 week old baby will not take my breast ....it has been a week. I hold her up to my breast and she screams. I am pumping bc I have to return to work in a week. She takes a bottle fine. I have been starting her with the bottle then quickly putting my nipple in her mouth. Does anyone know why she would suddenly refuse me to start but then will latch on??? I am so confused and getting discouraged....please help!!!!