15 months post op 350cc anatomical Allergan implants and experiencing intermittent misshaping to right breast. (Photos)

If I bend forward or lay on my front (seeing physio for shoulder issue) my right implant moves into the position shown in the picture and I have to mould it back into shape. I have said from very early on that it feels as though there is too much movement and perhaps a position issue but surgeon seems to think I may have CC. A second opinion disagreed with the possibility of CC and I am awaiting a private MRI (at my cost) but I wondered if anyone has any thoughts as to what might be the cause.