You give your husband a hug and find yourself patting his back.
Adult heads look abnormally huge and ungainly because you've spent so much time holding and looking at the baby.
You are suddenly programmed not to sleep for more than 2 hours at a time.
You have lively conversations about burping, farting, vomiting, and pooing with anyone who will listen.
Your breasts become strictly utilitarian objects.
Your last four google searches are:
1) how to make a baby burp
2) 4 week old baby vomit
3) 3 week old baby sleep patterns
4) newborn care
You send your husband an email with the subject line: "info about baby puke"
Amazon thinks you might like the following books: