could I be pregnant?

So, I ovulated the week of July 11th and on July 11th it was the second to last day before I stopped ovulating. We had unprotected sex but he didn't cum in me on the 10th. My boyfriend came in my on the 11th and 12th. On eve is said 22% chance on the 11th.  Tomorrow it says I start my period. Today and yesterday I had noticed light blood when I peed. So I took toilet paper and wiped and little tiny red blobs showed up. I have had this light bleeding on and off for the passed two days...