Ovulation

Jessica • 💍engaged👰🏻🤵🏻💕 College student

I got my positive OPK on the 7th, does that mean on the 8th I ovulated? When can I start tracking my days post ovulation? 😭all my apps have different fertile windows listed and doesn’t change regardless of how I input my data!! Should today be my first day past ovulation? 😭🤦🏻‍♀️