Do I still have a chance of getting pregnant?

So I've been using OPKs to increase my chances of getting pregnant n they've been super helpful. On Monday morning the hubby & I BD then he took off for a two day business trip. I tested that same morning after he left n I got a positive..there wasn't anyway for us to BD again until yesterday wen he got back from his trip. I'm sad & confused cuz I think I missed my window. What do u guys think?