I’m having Mr C on Tuesday so feel free to add me as I will be posting pics when I can.
I was in about 15/20 minutes I told him what implant size I wanted initially, but he examined me and had a look/feel of my boobs and said that he couldn’t fit them in with one operation, so he offered me 800cc implants which I agreed to and that was about it really! If you have very little breast tissue then he may suggest under the muscle, I’m around a B/C but I’m having overs. Going from an A to a D doesn’t really sound difficult or complicated so you should be fine 
Hope this helps xxx