My ds decided last night and this morning he didn't want right side despite it being his usual favourite. He cried as soon as I put him near it but took the left side happy as anything. I tried expressing a bit in case it was too full - no difference! It doesn't really matter - sure he'll change his mind again soon, but am puzzled as to why such an instant dislike without even actually touching right side. I don't use perfume or anything. Just interested if anyone else has had this or knows why...