Help me sir, i am confused about pregnency.

Patient: I had period on 11 th sep 2014 and it was finished on 16th sep. Then i had sex on 22nd sep. So i had i pill within 4 hrs. And so till i dont get my periods.i did urine pregnency test on 21 octo. But its negative..im confused ,am i pregnent?

Symptoms: Symptoms: coughing, sneezing

Doctor: