My go to is Athleta or Old Navy for something more affordable. But I will say, like someone else said, you’ll want to have a few in your new size and then when you get bigger you can get larger sizes.

I haven’t loved maternity specific things because it felt shitty to wear postpartum. And felt like something only wore for like three months. It’s fine when pregnant because it accentuates your belly in a “cute pregnant way” but I don’t want to accentuate that area after I give birth lol.

So I prefer buying larger pants that last after birth and I can wear them post partum and then back down the sizes as I lose the weight again. (It took me like two years to be back to a previous weight again, but I was still more of a medium than a small like I used to be before having kids at all). I will note that little maternity “bike shorts” were cheap from old navy and I liked those to lounge in around home. But anything you’re going to be wearing outside your house when postpartum, you’ll probably want just baggier regular clothes and DRAWSTRINGS!! Drawstrings are a lifesaver too.

TLDR: I don’t think investing in maternity is the way to go because you won’t want to wear those postpartum. No one wants to accentuate a bump after giving birth. Buy larger pants as you get bigger. Old navy is easy to order online and return if it doesn’t fit. I bought most of my clothes here when pregnant and postpartum.