surgery if pregnant ?!

Megan • 14 angel babies. 04.23.18 Annabelle🌈 💚💗 lost our baby Avery 1.24.19 👼 twins boys Bradley and Colton 4.30.21.. single momma
So I am scheduled to have ankle surgery on the 30th and AF is due 28th. I completely spaced my surgery and we've been TTC for many months now and we didn't even think about it until today that we haven't been careful at all this month. I know they make you take a pregnancy test before the surgery, I'm sure it won't happen this month anyway. But if it does come up positive will they still do my surgery? Does anyone have any experience in this? Any help would be appreciated. Thanks!