Okay So, I Had A Period Start The Very End

Okay so, i had a period start the very end of august and started again on September 21st. (22 day cycle) I have a cycle anywhere from 22-24 days. Expected period is October 12-14th. I had unprotected sex every day thru October 4th-10th. And have no expecting period symptoms like I normally do. Can I be pregnant? What are my chances that I am? If I don t start by the 20th will it be to early to get a result on a home test?