Hubby hasn't noticed

Donna • First time mom of a beautiful baby boy married to a handsome mechanic just turned 21!
My hubby and I aren't ttc like most people. We are definitely not preventing. No birth control no pull out method nothing. So it's hard to say we're not trying when physically we are but I he says we aren't. But I haven't had a period since may! He knows I took one test in June but it was negative. He has since asked me to stop taking tests but I guess hasn't noticed I haven't had a period.