Actually, if your nipple still has feeling, the chance are high. Breast augmentation (breast implants) isn't a reason alone not to be able to produce breast milk. Most likely, it depends on the kind of surgery you had, but most approaches are compatible with breastfeeding. Incisions made under the fold of the breast or through the armpit shouldn't cause any trouble. A "Smile" incision around the areola increase your risks of breastfeeding complications.