My 4 1/2 month old gets extremely upset (screaming, tears, arching backwards) today when I try to put him to the breast. I finally gave him some infant Tylenol which seemed to help (he did nurse once, I haven't gotten him to do it again...that was 1.5 hrs ago and he is sleeping now). He seems generally fussy when put on his side or back, and is happier upright. Any ideas on how to get him to nurse through this? He is lean anyway and I'm scared he's going to skip feedings and start going backwards on weight. Oh, and he won't take bottles or a pacifier.