I had my first ever depo shot in November 2012, i was due for the next shot in february 20, 2013 but decided not to go ahead with it, A month later, Feb 20th i had a periods then on March 6th has unprotected sex. I was hoping to have had my periods March 20th and still to date there is none. I think i have seen a coupla blood spots twice or so. Any chances that i might be pregnant? should i go ahead and take the test