In addition, pregnancy tests can be positive within 7 - 10 days after conception. Perhaps, his girlfriend went to a health care provider who was willing to do a pregnancy termination procedure immediately. However, the usual time at which to do an abortion is about 6 weeks after the last menstrual period. More likely, his girlfriend may have used emergency contraception, the morning after pill. This, however, is not an abortion.
Emergency contraception prevents pregnancy from taking place.
Regardless of what exactly happened, or how your friend's girlfriend got pregnant, he needs to consider the question of trust. Your friend deserves credit for being true to his feelings and withdrawing. Protection with a condom, or having outercourse with his girlfriend, or not having sex with her at all, might have made him feel more comfortable. If your friend is at school, it would be good for him to talk with someone at the health service for additional information and support.