Could I be preggo?!

Patient: Hi, on the 12th of January I had sex with my boyfriend 2 times. The first with a condom and he came, then he wiped himself off and 30 minutes later we did it again but without a condom, he did not ejaculate at all. I realize there is left over semen in the precum. I was on my 2nd to last day of ovulation. On the 19th and 24th I took pregnancy tests, both negative. I have no signs of pregnancy, it is now the 25th. My period should be due around 26-28th (as I don’t keep great track of it)Chances of being pregnant?(not on BC)