What's going on?

I got my period November 6th to November 10. My boyfriends stuck it in once on November 15th. I tracked my cm and believe I ovulated on the 24th. So I feel like I couldn't get pregnant so there might be a small chance. Iv been cramping and bloated and light Creamy cm. Two apps say I will start my period the 4th or the 7th. I got off my bc beginning of October and iv been irregular. What do you think?