Over the last couple weeks Christopher has been rolling over from his back to stomach in his crib. I was initially freaked out but now I've gotten used to it BUT now he's leaking out of his diapers...really bad! He woke up this morning and not only was his diaper super full but it leaked out all over his PJ's! His stomach was wet with urine! Should we go up a size? He just graduated to a size three and at night we put on the Pampers Baby Dry diapers. I just feel awful...I know I wouldn't want to sleep in my pee. Any advice?