My girlfriend and I had sex but I did not ejaculate in her. She fears she may be pregnant because her period hasn't come yet and it has been a week past when she usually has it. She did just move into college and lives in the dorm with other girls. Is this late period normal?

There's plenty of sperm in pre-ejaculate to get a girl pregnant. If you had sex, pregnancy is possible.

She needs to take a pregnancy test using first morning urine.