Although the chances of this happening are low, it is still possible to become pregnant from ANY close contact of the penis and vagina. A man does not always need to ejaculate inside you for pregnancy to occur. Pre-ejaculate (the fluid that lubricates his penis during sex) can sometimes contain sperm. You can also contract STDs from close contact, so it is best to use a condom to be safe.
You can help the HubPages community highlight top quality content by ranking this answer up or down.