Boobs keep growing?

Ts
Once you hit the third trimester, do your boobs continue to grow? Or, is it safe to shop for a nursing bra by now? I'm 28 weeks along (almost 29), and I don't want to buy a nursing bra only to have to return it because my boobs are still growing. (This is he biggest my boobs have ever been. I'm usually an A or B cup, so I feel like my boobs are hovering around C).