Ovulation/pregnancy

So I started ovulating on Saturday, (the 12th). And I had sex the day after. We didn't use any protection & he came inside me. How likely are my chances of being pregnant? I've heard that your chances of pregnancy are highest a day or two before you start ovulating?

I don't know, I'm trying to conceive and just am hoping this one is successful! I've heard many different things about the "best time to try" or when it will be most successful. I just need some advice!