You're not alone. Many women don't want to take prescription pain medication after surgery due to side effects, sensitivities, or other concerns. That said, breast augmentation — and all surgeries — will come with some discomfort or pain. Careful surgical techniques can help minimize the level of pain you experience during recuperation. Also, many surgeons will use a long-lasting local anesthetic that significantly reduces discomfort for the first day or so after surgery. Many women get by with over-the-counter pain medication, and some use none at all. As many of my colleagues have written here, subglandular implant placement typically produces less discomfort than submuscular, but I'd be careful not to make your decision based on that. Choose the implant placement that your doctor feels will create the results you want. Good luck!
Web reference: http://www.drchaffoo.com/surgery/breast-augmentation.cfm