Stomach sleeping after a breast augmentation?

I’m a week and a half post op but prior to my BA I was a die hard stomach sleeper. I’m very anxious to go back to sleeping on my stomach. A friend of mine who had her’s done told me that she was told never to sleep on her stomach and now I am back to freaking out! Is this true can you never sleep on your stomach? I know I have a while to go until I’m able to sleep any way besides my back but please someone help me!