No, I think you guys likely just got lucky and had other things swaying pink for you.
if your husband is 35 or younger you would have him abstain for 7-10 days before one attempt, if he's over 35 have him release on his own or with you, with a condom 7-10 days before one attempt. If neither has appeal have him release every 2-4 days or just "do what he does" provided you keep one attempt.