Late for AF

nb

We did our last IUI this cycle. I am on oral progesterone. I was suppose to take pregnancy test 2 weeks after IUI. But I didn’t because I am terrified to take a test just to see negative😞 I don’t have courage to look at the test. Now, I am 3 days late for AF, still taking progesterone. Is this whats delaying my period or may be I am pregnant?