My period is due on October 1 but I had this feeling that I could be pregnant

My period is due on October 1 but I had this feeling that I could be pregnant. I remembered I had a pregnancy test from a few months ago and I decided to take it. I was thinking it would be NOT PREGNANT even though I had a feeling I might be. I did t want to get my hopes up so I didn't return to the bathroom for about 15 minutes and was shocked to see PREGNANT on the window. This was my first month using glow to track my fertility. I'm still a little in shock that we were blessed so soon!