My daughter is 11 weeks old, she sleeps in her crib beside us, recently she has started moving about at night alot more, she likes to rub her head into the sheet from side to side which makes her move around. Therefore she ends up at the side of the crib and often bangs her head on it waking her up, plus her arms go through the bars and she wonders why she can't retrieve them - this also then wakes her. I wondered about using the bumper that came with the crib, but read that they shouldn't be used. Can anyone recommend/not recommend the use of a bumper. Thanks.