About a week after my last period ended my boyfriend and I were dry humping with only underwear on. He did not ejaculate, but there was precum. Now my period is about 5 days late. What I would like to know is this: What are the chances that I am pregnant? We have never had intercourse and my periods are normally regular, varying only about 2-3 days.

Chances are slim, but not non-existent.

Your period can be late for many reasons. Stress, an infection, change in diet, the list goes on.

If you are really worried then buy an hpt or see your doctor, but I doubt that you are pregnant.

If you are going to mess around, no matter how innocent you think it is, use a condom. Although condoms aren't 100% effective, no birth control method is, it's still better than nothing.

Good luck.

Altenweg is right, if you're that concerned get a test. But the chances are very small. Though precum can have sperm in it, it's not as much as regular semen, and if you were both clothed, even in your undies, that's another factor that narrows the chances. Just thinking and worrying that you're pregnant can cause a late period. Most Home Pregnancy Tests are 99% accurate, so you should know once you take one. If it's negative, it could be some other condition that is messing with your cycle-see a dr.