I am having the exact same problem. I was trying to figure out if it was a tummy ache and if it was a tummy ache was it air or something I ate? I think I will try to quiet things down and take him in another room to nurse and put him to sleep. I am not concerned about nipple confusion, I have been back to work since he was 3 weeks old and he has never had any confusion problems between me and the bottle (he is 15 weeks old now). We spent 5 hours last night in the vicious cycle of nurse, dose off, wake up screaming, walking to calm him and start all over. Frustrating for both of us. I look forward to reading other comments regarding this - I am so grateful to this site and all of the women that contribute to it.