Sex / pregnancy advice

So my period was due 9th September and it didn’t come then on the 11th September me and my boyfriend had unprotected sex and right after we had sex I started bleeding so at first I was a bit confused but the bleeding lasted for 5 days like my normal periods do so I’m guessing he just made my period come then on the 22nd September we had unprotected sex again that was the first day of my high fertility days my next period is due on 11th October is there a chance I could’ve gotten pregnant from this I’m not to knowledgeable when it comes to fertility days and everything