I'm sorry to hear about your dissatisfaction with the results of breast augmentation surgery. Unfortunately, it would not be a good idea for you to rely on online consultants for advise about the breast implant size to use if you decide on breast revisionary surgery.
Assuming you are...
You need a proper examination by a ABPS certified plastic surgeon. You need measurements and discussions of size. You will then likely be a candidate for high profile or full profile (smallest base width for the size) implants.
At size 34, each 200 cc's of implant corresponds to 1 cup size change. If you start with a B then you will end up a D. Certainly D is in the normal range. If you implants are placed sub-musclarly, your body will have to be able to accommodate that volume. Depending on...