Could I be pregnant or conceive soon?

My period started on Monday Jan 22nd. On the 26th at 12 am I had sex while still bleeding a light/medium flow. He ejaculated inside of me, I went to the bathroom and it came out with the blood. My fertile window says the 30th one app, the 31st on this one and the 1st on another one. My ovulation day says the 4th and one says the 5th . My question is, could I get pregnant from that unprotected sex yesterday? Does it mean that I could conceive on the day my fertile window opens?