If you BD the night before ovulation, then you timed BDing perfectly! My doctor said that it's better to BD before O rather than on the day of O or after because you want the sperm there waiting on the egg to be release rather than the egg waiting on the sperm. The sperm can live 3-5 days, but the egg on lives 12-24 hours.
I got a BFP at 10 dpo, so I hope you do too! Good luck when you test!