Nub theory?


So I’ve announced to my mum I’m pregnant and she instantly said that she can tell baby is a boy 🤷🏼‍♂️ My 4 year old says that it’s a baby brother too..

I’m only 15 weeks and they couldn’t tell me at the hospital and they couldn’t see 🤔

I’ve tried the ‘nub theory’ but I have no idea how it works properly 😫