Too little too late?

DH came back late last night. I have really missed him. We BD late last night. It was CD18. I usually ovulate between day 16-18. Could I have possibly ovulated yesterday? Could the timing still have been right? I don't know. I did not pee on any sticks this month. Whats the point? If I found out I ovulated on Friday or Saturday I would have been even more depressed. Instead I am working under the illusion that I ovulated Sunday and I still stand a chance this month!