Can the PLAN B pill make you only have your period for one day?

Answer 1

After taking Plan B, some women have menstrual changes such as spotting or bleeding before their next period. Some women may have a heavier or lighter next period, or a period that is early or late. If your period is more than a week late, you should get a pregnancy test.
http://www.go2planb.com/ForConsumers/TakingPlanB/faqs.aspx#AL12

Answer 2

I am confused, what does taking the plan b pill have to do with your period? If you're trying to do something to make your period shorter don't try by taking plan B. Plan B will make you feel really sick after taking it.