My period was Sept 17-20.

On the 21st I had sex using condoms. On the 24th I had unprotected sex, and on the 26th I had unprotected sex as well. On the 26th my boyfriend and I did it for a long time unproteced and we were both scared so the day after I took Plan B. However, I'm not sure if any of his ejaculation went in from the previous dates, it would be too late for the Plan B to work. In October, I got my period on the 3rd - 6th. And again on Oct 19th - 22nd. Now for November, I was suppose to get my period on November 7th, but I'm 4 days late. I'm never this late for my period. Am I pregnant? I am really worried, and scared to take a tester.