How long did it take for your boobs to get bigger?

Hannah

I’m 24 weeks along now but I started producing colostrum around thanksgiving. (Roughly 19-20 weeks) before pregnancy my boobs were only an A34 and they’ve only grown to B32. Still really small. I’m due April 20, will they grow and produce more milk in the next four months? I’m not stressing just generally wondering cause everyone is always saying they went up two full cups and I’m not even to a cup yet.