Maternity bra

Anyone buy a maternity bra yet? I'm 9.5... Or 12 weeks (will know at my dating scan in 2 weeks) but my boobs are bigger and hurt a lot that I've been thinking about getting a maternity bra or two (one for sleeping bc it hurts to turn). But I feel like it's too soon.

I am also "blessed" (more like cursed lol) with big breasts already.

Thoughts, opinions?