Someone help

So let's say I have sex with my bf a day or two before I was gonna ovulate (as said on my <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">period calendar</a> ) the day Of ovulation I had cramps couple two days after I started have back pains and cramps I started feeling tired and my period was a week or two away now it's a couple days away I'm waitin to see if it will come or not I'm hoping I am pregnant I've been trying and I hope it comes true but is there a chance I can be pregnant ??