confused asf

Mari 🌼🐝 • MOMMY OF 2 KINGS 👶🏾👶🏾👑
So I got my 2nd period on NOV.18 after having a csection , it lasted 3 days..  ever since I've had a baby my period has been out of wack. I had unprotected sex NOV.21 . On this <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">eve</a> app it says I'm not fertile until a couple of weeks.. like around dec 11-17.. could I get pregnant?