Sex only once in fertile window….?

Have any of you ladies conceived when you were only able to have sex once in your fertile window. I was hopeful but now during the tww, I’m not hopeful at all. Hubby and I had sex on Friday night (well, 1:30am so Saturday morning) and at 9am on Saturday morning (8 hours later) I got my Peak on a ClearBlue Advanced Digital. Unfortunately, my hubby had to leave for work so we were not able to BD the next two days like people suggest.

Is there any chance for me this month? Have any of you conceived having sex only once in your fertile window?