Ovulation Pregnancy

Millie
Do you nessacarily have to have sex on ovulation to get pregnant? My hubby works out of town so we only get a few days in my window to BD and I'm not sure is I'm ovulating on those days. So we just keep hoping to BD enough around ovulation that the sperm will live to get to the egg. Thanks! Also thought about try preseed this month if anyone could give me any pointers, advice on that! 😊