I have only been trying to get pregnant for 3mo, i know its not very long. Last month my cycle was 28 days and I ovulated on Day 17. this month I am now on day 20 and have yet to ovulate, ive been using the Ovulation Predictor pee sticks, and for the last 3 days have been slowly getting darker. is it Possible to ovulate on day 21 and still have a pregnancy, my cycles are only normally 27-29 days.