Am I pregnant or is this a reaction to taking plan b

Patient: I took plan b 7 days ago and now and since i took it i am experiencing pregnancy like symptoms. However it has been 7 days since plan b and 7 days since sex (plan be taken on same day). So i was wondering if these symptoms mean i am pregnant or are them from plan b or are they completely unrelated to either

Symptoms: Nausea, tooth pain, achy muscles and back, pain in throat when swallowing, had a fever a couple days ago but i am over that now.