Had my period a week before having sex, used a condom but saw that some of it came out so I took Plan B and a week later had a one day period and now I am a week and 2 days later than what I should be. Do you think I am pregnant or is it just the Plan B?

I am assuming that what you "saw that some of it came out" was semen, and that is why you are worried.

It is great you used a condom, but if some of the semen came out of the condom and touched your vagina or vulva, then you made a good choice to use Plan B.

Your "one day period" was most likely "breakthrough bleeding" from using Plan B. The instructions explain that a side effect of this is breakthrough bleeding (any bleeding in-between your period).

You are now a "week and 2 days later than what I should be", and I assume you are referring to your menstrual period?

If your period is late, you can take a home pregnancy test any time after you are expecting your period. Otherwise, Plan B can cause a delay in your period (usually just a week).

Hi Anonymous,
Before I can address your question, I need to ask you some questions so that I can understand exactly what has happened.
When you say that you saw some of it come out- do you mean that the condom broke or do you mean some semen leaked out?
How soon after this sexual encounter did you take Plan B? Plan B should be taken within 5 days or 120 hours after unprotected sex. It is more effective the sooner you take it.
Side effects may include changes in your period, nausea, lower abdominal pain, fatigue, headache, dizziness, and breast tenderness. Some women may have changes in their period, a heavier or lighter next period, or a period that is early or late. You could do a home pregnancy test. You're much more likely to get an accurate result if you wait a week after your expected period before testing.
Hope this has been of some help.