You should not be pregnant; missing one pill like that is okay. You didn't need to take plan b. You may miss your period this month due to that, but there's now way to predict now. What you were supposed to do is just take the pill when you remember and you would be fine.

My breasts always got sore right on schedule when I was on orth-lo.

If after you missed your pill you took the other pills on time you should of been fine, from what i uderstand, you dont need to take plan b with bc. Plan b can mess up your period. And for some people bc can make your breasts tender, My bc made mine really tender all the time.

Hope I helped alittle have a good day.

You only need PLAN B with BC if you miss 2-3 pills in a row and had unprotected sex.

BC does cause breast tenderness.