Sleeping position after nose injury

Hi doctor, One week ago, i had a nose injury. My nose wasn't straight... Three days ago a doctor brought my nasal bones back to it's place (reduction). My question is about sleeping. I'v been sleeping only on my stomach for years. Of course i'll sleep only on my back until i know it is safe to change my position. When do you think i can sleep on my side, or stomach? Is sleeping on the stomach (which makes pressure on my nose) can do any damage to my nose shape or bones? Thank you so much! :)