Nursing bra

I bought early 2nd trimester when my bras couldn’t fit anymore. I sized up. Was B65/70 pre-pregnancy and I bought my nursing bra in size medium because I’m hoping to be able to still fit in them even after I give birth. But it does feel like the straps are starting to get tighter so I’m intending to use the extender that comes with it. It depends on where you are at your pregnancy. If you’re already near your EDD I would suggest to go for a size that still has abit of space cuz I heard your boobs will still grow after the milk kicks in. I bought 4 pieces in medium to rotate for now and I think will buy another 4 pieces in a larger size if needed nearing my EDD which is in Aug.