So, is this a BAD thing?

So, my son decided to pull and all nighter again after two weeks of being on a semi-normal schedule. I crawled into bed at 4:33 a.m. (not that I was paying attention to the time or anything) I vaguely remember at some point in the a.m. getting up to get him to nurse. I KNOW I changed his diaper... do I REMEMBER changing his diaper... heck no! Is that a BAD thing to be in automatic mommy mode???