This is my first month <a href="https://play.google.com/store/apps/details?id=com.glow.android">tracking ovulation</a> by cervical mucus and cervical position.  This afternoon I have EW CM. how long of a window does that give me to BD? We bd the night before last, but not last night.... Could that one time do the trick even tho it was a few days prior to ovulation? We won't be able to again until late tonight, will I miss my opportunity??