Here is my situation. My girl friend and I are very close now and we have gotten to the point to we are not actually engaging in intercourse but we are doing some heavy petting. About 3 weeks ago (20 days to be exact) We did so and I am to think that some of my sperm might have entered her. Her period had been over 2 or 3 days before. She is expecting that she will start again sometime this week but it has not come yet. Might I add that she is highly stressed over this and this might be the cause of her being late. She is not showing signs of pregnancy yet, but could she be? PLEASE help. Thanks

If she had just ended her menstrual cycle (2 or 3 days as you have stated) it's quite unlikely she would become pregnant. However she can get pregnant any time in her cycle, so always be safe and wear a condom, even when it's not actual intercourse.

Sure she could be. Or not.

Unprotected sex where semen has access to the vagina can get her pregnant.

Now you both get to be stressed and wait it out.

Sorry... its just the truth.

Next time use protection, whether its intercourse or not. Otherwise be ready for this stress over and over.