Hello and welcome to you and Teddy from a fellow UK-er!!!
MY OSCAR gave very good advice...she always does!
Horrible isn't it, hearing the Littlie's awful, heart-breaking (loud!!) wails. But it is a period of time that will pass....slowly and gradually! You're not doing anything wrong, it's just that YOU know what's happening in their little lives, but HE doesn't, and must wonder what on earth's happening!
Good luck, and enjoy your little boy! Sally + Harry

x