good afernoon doctor .I am a boy age 19 and my girlfriend age is 18.coming to the point directly, we both had sex in april 2015 she was virgin, i didn t ejaculated in her vagina, but still we were afraid then she had unwanted 72 within 2 hour only, she bleeded 2 days heavily. her period date gone delayed we were afraid so we checked by pregnancy kit.their was nothing. again we had sex but this time i used condom, again her period gone delayed , again we checked pregnancy but their was nothing, but after that she was having very light period every month, and only for 2 days approximately, but this month it gone delayed by 1 week, dont know what to do right now, is she pregnant?