Oh my god!!!!!!

I had a dream that i was waiting to go to my friends ( which i was in real life, today at noon) and in my dream i decided to check the time to see when to leave, my watch said 31:00 which is impossible so i said to myself " I am dreaming " and then everything went black, i had a tingly feeling... then nothing happened... but i was aware of my suroundings, i got bored so i just woke up

But i dont know why it didnt work, i think that i said " i am dreaming " in real life too because i heard my self say it doublely....

What happened? I WAS SO CLOSE gfhgh