Do implants "drop" after an implant exchange?

I think that the best person to ask about your implants would be your surgeon. What was removed and what was replaced will assist in answering your question.

Whether or not a breast implant will “drop” or "settle” after revisionary breast surgery depends mainly on exactly what was done during the revisionary breast operation. For example, if the breast implant capsules are not adjusted along the lower breast poles, then significant “settling” of the breast implants is unlikely. However, if your plastic surgeon has manipulated the lower breast implant pockets (for example, capsulotomy was performed), some breast implants settling is to be expected. Therefore, your plastic surgeon will always be your best resource when it comes to specific/relevant information, advice, and/or reassurance. Best wishes for an outcome that you will be pleased with long-term.