Unprotected sex nine days ago, pulled out. plan b four days later. period due this week. should i take hpt? having pms or pregnancy symptoms?

Don't know which.: Plan B One-Step is up to 89 % effective when taken within 72 hours (3 days) after unprotected sex. It can reduce chance of pregnancy by up to 95% if used within 24 hours. It continues to reduce the risk of pregnancy up to 120 hours (5 days) after unprotected sex, but is less effective as time passes. Normally pregnancy symptoms don't occur until you actually miss your period. If period is late >