[Just Peachy.]

Like others have said; you're likely to not be pregnant.

I'm just going to mention reasons why you might have missed your period.

-Stress can affect a period tremendously. What happens is, when a woman is stressed it decreases the amount of hormones which causes said woman not to ovulate/start period.

-Change in your schedule. You wouldn't think that this would affect you much, but it does. For example, your sleeping at all different times, or switching from a night shift to a day shift. Basically it's screwing with your biological clock.

-Change in meds. Speaks for it's self, really.

Obviously there are more reasons, but this is just a few. Basically, what I'm getting at is: there are more reasons for missing a period than pregnancy.

If you're that concerned, call your doctor. As they can get it sorted out for you.