Don’t worry too much about one being higher or slightly bigger. The nurses tell you to think of them as sisters not twins. They will drop and lose the swelling at different times.
If one is massively bigger than the other, red swollen and sore then call the nurse to be safe.
I felt much more pain in my right boob. My right boob is harder and hasn’t dropped yet. My left is soft and has dropped. I had my 6 week post op with the nurse and she said they were perfect. Just the right still had some dropping to do. I’m right handed so my right side is worked harder than my left hence why it’s not dropped as quickly.
Don’t worry ladies. It’s early days. You have a lot of changing to do. It will all be fine, but if in doubt send a pic to your nurse to be sure.
Happy healing!