How crucial is it? I only ask because the cheapest ones I've seen here are at least 50 bucks. I saw some ones at Target online I like that I could have MIL bring back for me when she goes to VA in a few weeks.

I started out a 34A, then over the holidays I got measured again at 36B. Now at 25.5 weeks, I may have grown a teeny bit more, but then I heard/read you grow a ton more when your milk comes in...?

Should I go for it now, or just wait?

(I've seen some people selling theirs online locally, but TBH that kinda just skeeves me out.)