Hi there, I was experiencing the same nightmare so called MYA. They referred me to the post op notes given before I left, which say to sleep at 45 degrees for a minimum of 2 weeks to help with symmetry. Thereafter you can go on to your back, but you must not sleep on your side until after the all clear at your 6 week appointment. I’ve seen other blogs from girls saying they slept on their side earlier – although they’ve usually moved in their sleep and not done so deliberately – some have been fine, but others said they’ve woken with discomfort/pain and swelling. But I’m sure it will differ depending on the procedure you’ve had, so I’d say be as patient as you possibly can, but ultimately you’ll know if something is wrong cos it will hurt.