What does it mean when you have foul smells coming from your vagina?
You have some type of infection. You will need to see the doctor to get treated. See: What causes Bacterial Vaginosis?
This question isn't very clear. If you mean sperm was put into your vagina manually then pregnancy will not result from this as sperm dies shortly after coming into contact with air. If you mean you had intercourse then you can become pregnant if your partner ejaculated or inserted his penis into the vagina(preejaculation.)