Why is one breast hanging so low?

Hi.  It's difficult to answer this question precisely without a photo or an in-person exam.You may have expansion of your pocket in a downward direction.  You may have soft-tissue stretch of the lower portion of your breast.  Sometimes, a capsule on the opposite side will make the normal side seem lower, when its really the other side that's a problem.Best to see a board-certified plastic surgeon who is experienced in these sort of revisions, to get the diagnosis & treatment plan sorted out.

Thanks for your questions.  There are a number of reasons why your breast may be sitting lower than the other breast but without photographs or a consultation, its difficult to address your concerns.  Your breast skin may have stretched, your implant pocket may have expanded, your may have capsular contracture of your implant which is contracting your other breast higher and making it appear as though your other breast is sitting low.  Its essential to have a comprehensive consultation with a plastic surgeon to discuss your concerns and consider your options.  It is likely you will need to consider breast lifting to correct the problem.

Without photos I can not say.  But if your implant is hanging low or the breast is, you may need a revision and/or a lift.