Can I get pregnant if I had sex 5-6 days after my period ended?

So I had my period Oct. 5th to the 9th I believe (of course I never logged it!) Around the 14th I noticed quite a bit of white, pastey discharge on my panties. I figured I was starting to ovulate? That night (of the 14th) I had sex and my boyfriend came inside me. My periods are sort of irregular but they're totally normal when I get them. Is there a chance I could fall pregnant even that early after my period ended?