Breast Implants Leak Due to Sleeping Position

It sounds like it is not a leak. However, without examining you it is hard to tell. If you implants are saline filled and had a lead, the size would decrease much faster that what you are describing. It is best to go back to your surgeon for a consultation.

If you have a slow leak, it would take some time and the implant would eventually get smaller. If one side is doing this and the other isnt it may be a leak. Unlikely that this is happening to both sides. You may have enlarging of the skin envelope and decrease in your body fat and breast tissue to explain the rippling.
I would just recommend to go see your plastic surgeon and have him/her judge.
Hope that helps.