When to test to see if pregnant?

Heather • Just got married in July 2013 and living the good life in San Diego with my husband and dog named Aggie.
I just got off the pill at the end of April.  I'm 3 days past when my period should have started and I haven't even had a hint that I will be getting it any time soon.  I have had unprotected sex with my husband since going off the pill too knowing it was a possibility I could get pregnant. At what point should I take a pregnancy test?