So, the other day me and my girlfriend were fooling around. Both of us were naked. She was sitting down in a chair and I was ontop of her. She was blowing me, and right before I jizzed, she stopped blowing me, therefore causing me to ejaculate all over her neck. We we both completely naked, and the jizz ran down to her vagina. She cleaned it off quickly. She had her period March 29th, then May 2nd.  Its now June 3rd. Could she be pregnant?