How long does it take for sperm to meet egg? Please only answer if Dr. told you or have proof. THANK YOU!!!?

I had an ultrasound and had a 2cm follicle yesterday at 3:30. We couldn't BD before it so we BD 5 hours later at 8:30 when hubby got home. This morning at 6am my bbt had risen. do you think we made it in time? How long would it take for sperm to meet egg???