Ovulation cycle

Tiffany
Well it has been a very long time since we have tried to get pregnant! I am now 40 and our kids are 14 & 13 now so decided to give it one last try! Supposedly I was ovulating over the past few days - yes we were active very active! What are the chances of conceiving? Do we still become very active up until I'm suppose to start my cycle? Help for advice. Thanks