Surgical Bra post mastectomy?

Hi everyone, I have my DMX scheduled for 2/24. I asked the surgeon about surgical bras and if they’d have enough for me to take 2 (one to wear and one to wash). She said they weren’t even sure if they’d have one in my size since I’m on the smaller side. So I’m wondering… Will a front zip sports bra do? Or should I order a surgical bra? It’s so hard knowing what I will really need. They did give me 2 pouches to put the drains in and I have some front close sweatshirts with internal pockets.