I know when I ovulated because I used the digital opk. The 18th and 19th .... well 13 days pass ovulation and still BFN!!!!! Normally when I'm pregnant I know after one day late. That's how my body works... does this mean I'm out because I know that much about my body.... my husband and I are trying not to be sad but this can be very stressful.... if we aren't pregnant we are going to focus on other things we both want to do like travel... maybe this will lighten the hurt we go through ... no more planning...