What are my chances of conceiving on my period?

Glow doesn't give a percentage for period days. My period came Hella early this month and my cycle has been out of wack too so idk if that means I have a chance of ovulating early? My bf came in me because he thought everything would be fine since Im on my period. I'm pissed because I would never make a decision like that. He should have known better. But what do you think? What are my chances?