Husband is away but BDed 2 days ago-How likely is it that I could become pregnant this month?

Dee
I'm grateful to have gotten a positive OPK after weeks of testing but still frustrated. I have been testing all month and finally got a positive on Cycle Day 23. Of course my husband left for a week-long work trip yesterday and we last BD 2 days ago. Given that sperm can live for up to 3 days inside me, and that the surge means I should ovulate anywhere from 12-36 hours from now, I think my chances of conceiving this month are pretty low, but want to know if I can have just a little hope! 

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