Maternity bras for small busted people

Catherine • Wife. Mom to 3 + 1 on the way! 👩🏼👧🏻🧒🏼🤰🏼Dog mom! DV survivor. 💜 Georgia 🍑🇺🇸

I’m currently an A cup, and they’ve been sore for the whole 16 weeks, but I haven’t outgrown my bra. I do however want to buy a maternity bra for support and growth. And because I read underwires restrict milk ducts, but I’m not finding any size charts that measure below a B cup.