Its common for a lot of women not to have their boobs grow at all during pregnancy. I'm pregnant with my third child have breastfed my daughter and my son and my boobs did not grow at all until weeks after having the baby. Advice for breastfeeding is to make sure after every single feeding you pump each breast for 20-30 minutes. There is also Mothers Milk Tea and Fenugreek vitamins which will help increase milk supply . make sure you have your baby latch on as much as possible to help your body know it needs to keep producing milk.
I wish my hobos hadn't changed. I have gone up about 3 cup sizes. And I wasn't small before. Got to the point where I can hardly find a bra to fit me. :( but don't worry. I know women who's breast haven't changed at all during pregnancy and we're able to bf just fine.
with my first child my boobs didn't change until after I had him. I did not breastfeed but they would leak when I held him and be sore becausethey were full of milk. do not b discouraged. I'm sure you will b fine a lot of women start after they give birth
Ive heard some womens breasts dont grow and they are still able to breastfeed!