A girl gave me a blowjob, then she kissed me, then i gave her oral sex. my penis never touched her vagina and i ejaculated in her mouth. could she be pregnant? her period ended last monday.

Blow job: It is highly unlikely to achieve pregnancy through the mechanism that you are describing. A woman ovulates on 'length of cycle - 14 days', e.g., in a 28 day cycle on day 14, in a 30 day cycle on day 16. This, too, makes it unlikely that she could get pregnant from this encounter.

Very unlikely: It's technically possible, but the sperm would have to survive two oral cavities and significant dilution with saliva. A relatively small amount of sperm (out of several million) would have to traverse the vaginal canal, enter the cervix, uterus and likely the fallopian tube. The timing of her cycle suggests she could be ovulating soon. Some std's can be transmitted by oral sex. Use safe sex.

Slim to none: As oral fluids are strong enough to renders semen fluids inactive

NO: Without vaginal penetration and direct ejaculation- she cannot be pregnant.