7 week post breast augmentation and left breast sounds like a squeaky toy. Any suggestions?

It is not unusual for breast to "squeak" early on in the healing process. With time, this will subside.

introducing foreign body like breast implant, bring in new sensation.in your case, especially if you had saline implant, there is air in the implant.i can reassure you, that air will exit. implant will stabilize. soon you won't hear those sounds anymore.good luck