TTC and AF due today. Should I test or wait?

[Cherry30x]

Hi guys. I have 2 children. 15 and 9. I am trying for our 3rd. This is my first month of ttc.
Af is due today however no sign of her yet.
I’ve took a pg test 3 days ago which was a BFN!
I’ve been cramping for the past 3 days and had small bit of thick milky white discharge.
Just wondering shall I re test or wait a few days?

I didn't get a positive till 2 days after my period was due. But it was a cheap test that I brought in bulk off eBay.
I'd wait, but I know how hard it can be.

Really hard to wait isn’t it. But it would be a waste of money if it was BFN and AF came later. I’m torn between going to get a test and just waiting it out 🤭