I was a B with my first by the end I was a D and when my milk came in I was a DD. My boobs never shrank even after I lost all the baby weight. Im now pregnant with my second and am going into DDD. Everyone is different ive heard of people's boobs going back to the original size, staying a cup size larger, or loosing all the boob they got and had before pregnancy.
Yea it's so annoying lol I was a 36B now none of my old bras fit I had to go bra shopping. Hopefully it doesn't get any bigger lol