What are my chances of concieving.?

Unfortunately, there's a 20% chance of pregnancy each month. Even if everything is timed perfectly, it may just not be the right time. Although, considering your monitor picked up a peak, you had a positive OPK, there was good mucus, and you BD the right time, that is great! Also, ovulating around Cycle Day 14 is a great time, as it's not too early and not too late. I ovulated around Cycle Day 22ish and it took me 9 months to get pregnant. Good luck!