TTC after BC

Stephanie • ❤️ Hi! I’m 38 & TTC Baby #2 ❤️

Hi! I stopped taking BC at the end of October and had my first period after BC on 11/16 -11/18. How will I accurately know when I ovulate this time if I haven’t really had any previous periods dates on my <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">period apps</a>? I’m trying to gender sway for a girl and you are supposed to stop TTC 3 days prior to ovulation. Any tips are welcomed!