breast size

Will my boobs get bigger if I go on the pill?

Hey guys. I'm 18 and have really small breasts, I'm like a 32A, but I'm also only 5'3 and around 110 pounds. I got my period when I was 13 and my breasts have not gotten any larger. When I first got my period, I was around 135 pounds at my heaviest, but they were not any bigger then than they are now (I didn't go on a diet, the weight just melted away)....