Do you gain weight after breast augmentation?

Hello,Thank you for your question. Other than a pound or two related to the implants themselves, there wouldn't be a reason for long term weight gain related to your BBA. In the short term, some people retain fluid for a few days post op.All the best 

Thanks for your inquiry,  a 400 cc implant weighs about 1 pound.  In addition after surgery, you do retain fluids for a little while but that should resolve after a few days.  Good Luck.