Can I be pregnant? And can this be a sign?

Okay so Me and my bf had unprotected sex on Saturday and I was on top when he came inside of me a little bit but I got off quickly. Okay so after that I tried not think I could possibly be pregnant and my glow app says I'm ovulating since yesterday could I be pregnant? And TMI my nipples been really itchy and really Dry like the skin on my nips are peely ? And also I'm very emotional lately and I get really irritable really fast over nothing I want to cry at nothing I don't know if that could be an early sign? And if I could feel those kind of symptoms really early if I am pregnant ? Help me out !?