Over the last couple weeks I’ve noticed a weird skin flap in my cleavage I have gained weight will this go away?
There are visible skin folds between the breasts. Tissue should be left there to avoid symmastia. Further evaluation by your surgeon is recommended.
This is occurring because your implants are likely below the muscle and do not go as far medially (towards the midline) as your breasts do. While this can be corrected with surgery, there is some risk of the pockets becoming so close together that they actually merge in the center, a condition caused synmastia. Another option would be some fat grafting into the space to fill out the skin more fully. Consultation with your plastic surgeon will better inform you of your options.