Is it possible?

Okay guys so earlier this month I had unprotected sex. It was a couple days before my period was supposed to start. My period came this month but it was late, shorter and lighter than usual. I was wondering if it's still possible to be pregnant. I have noticed that certain smells have become stronger to me. I was mixing color today(go to cosmetology school) and the color was so strong to me I had to step back, I even asked someone if it smelt really strong and they said it was fine. Other smells make me wanna throw up. I also have really bad cramps right now which I don't usually get until my period is supposed to start, but it's not due till the 11th of August. I haven't been stressing myself about this because I just stated thinking today about it. I haven't taken a test yet. I was just wondering what you guys think?