Trigger shot---when do I take HPT?

Hi everyone! I started clomid for the first time this cycle and also used a trigger shot (ovidrel). My opk was positive a few days earlier, so I'm not really sure when my period is supposed to come (Glow is to predicting Friday). I gave myself the trigger shot two weeks ago today, and I was wondering when I should test. Part of me is wanting to wait until AF, but the other (impatient) part can't wait, as we will be doing IUI this cycle if we don't get our BFP.