Should breast implants after reconstruction begin to sag and ripple after 6 weeks? (photo)

What are the best techniques to repair this? Delayed reconstruction after double mastectomy even with 24 hours support bra wear. Spacers in for 3 1/2 months. 425CC implants, 5'1", 102lbs, now size 34C. Breasts are sagging 1/2" below bottom of breast, 3/4" below incision , rippling on both sides and breasts fall into armpits when laying on back. Skins is super loose and breasts are soft. Sharp pain in left breast when using left arm. Can Alloderm be used without removing implants or do I have to start over again?