This is going to be a ridiculous question :S. BUT I'm going to ask it anyways.  How long do you wait until you take a pregnancy test?  I have been with my husband for a total of 13 years.  We have been married for 4 of those 13 :).  Nothing has happened in those 13 years. I'm asking this question because I was supposed to start on Tuessay and nothing yet :). I have been going hard at things and tracking my ovulation I just recently started taking the pregprep pills and don't know if that's why I'm late.  I started to take the pregprep pills on the 1st and don't know if it alerts your cycle.  Does anyone know about this?