400cc should not be a problem and is probably not too big but there are other issues that need to be accounted for when planning your surgery. Getting implants that are slightly smaller in diameter than your breast base width is as important as picking a volume size of implant. Specific issues...
Post op bras are typically for both support and compression. However, if your bra is causing discomfort then you should try a different brand / style / or larger size. Of the two, compression vs support, typically the support characteristics of the bra are the more important. You should check...
You are still very early yet in the healing process with a significant amount of swelling still present. It can take several months for much of the swelling to subside. At that point, you may have a better idea as to what cup size may be reasonable for you. However, because there is no real...
