“On March 19th I Had Unprotected Sex And My Boyfriend

“On March 19th I had unprotected sex and my boyfriend used the pull-out method and I took plan B the same day a couple hours later. My last period before that was on March 10th and ended on March 14th. I got another period on March 25th which is two weeks earlier than usual which ended on March 27th. I expected my period to come around April 10th but it still hasn’t come so I was wondering if there is any chance that I am pregnant? Why hasn’t my period come yet? Was the early period my actual period in which case, does this mean I’m not pregnant? Please help.”