Gender swaying. Boy or girl?

CD 15, negative opk, no surge. we DTD at night, around 9:30-10 ish

CD 16, LH surge on opk around 11 am.

Tested again at about 9 pm and still had the positive opk indicating LH surge.

CD 17, negative opk around 10:30 am

When did I ovulate? CD 16 or 17? If we were swaying for one gender or another, what would our baby be assuming I get pregnant?