When do YOU test?

Crystal • 1st IUI: 11/14/15, BFP 11/27/15! Miscarried 12/4/15. 2nd IUI: 12/20/15, BFP #2 1/2/16!!!
We are TTC and I am expecting AF this Tuesday. I know that it is possible to test now but I have no symptoms. Do you ladies typically wait until something is different, or do you test when you know you can?