It sounds as though you may have over done it with your work out. You may have strained the muscle or (worst case) torn the muscle. You did not mention any bruising.
I would advise that you at least get this checked out by your plastic surgeon.
Good luck.
From your description, it seems like you are progressing as planned from your surgery. It is not uncommon for patients to have one side that will drop faster than the other. It is important to be patient in the early phases of your recovery. Frequently these issues will resolve themselves w...
If you do not see any change in appearance of your breasts following dancing, I think you are more than likely fine. If anything has changed about the way they look, please contact your surgeon. All the best!