Thank you for the question and pictures.
You should be aware that a significant percentage of patients at your stage of recovery will feel that they are "too small" or (less frequently) "too large". This perception may be related to the fact that their breasts are compressed by dressings/bras and/or patients aren't able to see the entire breasts and their relationship to their full torsos.
I have found, that with time, as breast implants “settle” (drop and fluff) that the resulting breast size/shape SEEM larger. You will be able to see this for yourself (later in your recovery) if you stand in front of a full-length mirror and “pull up on the breast skin and down on the breast implant"; as the breast implant moves into the lower part of the pocket and the nipple/areola move up, the breast may appear to be larger in appearance.
I would suggest you wait at least 3 to 6 additional months before you make any decisions regarding the results of your breast augmentation surgery. This waiting time will allow you to (potentially) physically and psychologically adapt to the new body image.
In the meantime, continue to follow-up with your plastic surgeon to discuss your questions and concerns.Best wishes; odds are that you will be very pleased with the longer-term outcome of the procedure performed.