I have this same problem with my 4 week old premie, she came 5 weeks early and spent a week in the NICU where she had a feeding tube and bottles. I have to wear a nipple shield in order for her to feed at all (flat nipples I was told and pumping to pull them out does not help) and she does the same fussing and screaming (and I mean major screaming!) and knocks the shield off. I feel like bad mom and end up having to give her a bottle instead. I have to give her 1 oz of high calorie formula after her feedings regardless of bottle or breast but I am in tears everytime I try to feed her and she screams. Will bottles at night ruin breastfeeding for me, its the only way she will eat? : ( Will this pass?