That mini heart attack when your baby sleeps for longer than 5 hours for the first time.
The panic gripping your chest as you tiptoe to where he sleeps and try to assess if he's breathing, without waking him up.
The wave of relief wash over you as he takes a sudden deep, noisy breath.
The clarity of mind you have throughout the day after getting 6 solid hours of sleep for the first time in months.
Oh the emotions of having a 5 week old around.