CD21 Progesterone Test

I just need someone to ease my worries...I’m having a CD21 (which will be 6 DPO for me) progesterone test this Friday. It’s intended to confirm ovulation. I already had CD3 bloodwork earlier this month which came back normal. Anyway, I’ve been TTC for 7+ months with no luck. However, I get strong positive OPKs on CD14 every month, and have clockwork 28 day cycles each month (never even been one day late or early). So, the chances of the progesterone test coming back normal are pretty good, right? I’m so nervous. 😕 My husband and I are leaving for a cruise next Monday, I’d hate for bad news to ruin our vacation.