Skin sagging and tingling - Could this be an injury from weightlifting? (photos)

I had a breast lift with implants 4 years ago. At 8 months after my sugery I had a revision as the skin on my breasts was clearly sagging. Here I am today with sagging breasts again, the right one looks deformed. I am considering another lift but not sure if I should also consider a smaller implant. Could this be the issue? Also, the last 3 wks, I been having a tinggling sensation in my right nippple. Had a mammogram but all is fine. Could this be an injury from weightlifting?