I am scheduled for a breast augmentation March 19th. Im super excited! My pre-op appointment is Thursday the 12th.. At my consultation, I tried on 3 different size implants.. I like the 400cc natrelle, but I'm having under the muscle placement so the dr recommended to go with the 440 Sientra implants to get the same result. They did not have that size to try so im nervous. I'm currently...