Confused-Pregnancy, PMS or I-Pill effect

Had sex on 16th January. It was my first time. He ejaculated 2 times , both the time he pulled out before ejaculation. I took I pill next day within 22 hours. Did not feel anything on that day but from 18th I started having clear discharge ( sometimes with white textured particals, foul smell not stretchy at all). From 19th I started having the below mentioned symptoms - Mild lower abdominal cramp,Calf muscle pain,Nausea,Tender and sore breast,Rotten egg taste in mouth. I generally have atleast one or all of these symptoms before period every month except the taste change. I had my last period on 24th December 2021. It got over on 26ty. My cycle varies from 28-33 days. Technically I should get period by now. Today, 21st January, I did a urine pregnancy test, it came negative. I don't want to get pregnant now. I am very confused. Should I wait for 5 days more and then do the test again? What are the chances of getting pregnant under the above mentioned scenario?? Kindly help