You need to find a surgeon you trust and are comfortable with. Sounds like you are second guessing your surgeon. What you are really questioning is the surgeons judgement. That is perfectly fine but before letting someone operate on you , you best establish trust. I think you...
It would not be normal to have an air bubble in a breast implant and it is most unlikely that you do. However, the feeling you are experiencing is quite common and at 4 weeks it is most likely to be the implant. If there was air around the implant following your operation it should have absorbed...
The first recomendation I have for you is to use silicone as the larger implants will have rippling issues. The minimal size to get you to a D is the 375. This will be a smaller D. For a mid size I would go with 450 and use a rule of thumb that 150 cc is equal to one cup size.