Dear Dr,I had unprotected sex 3 weeks ago abd took ella tablet on the day itself. After that incident, i had itching, and yellowish-slightly-thicker-than-usual vaginal discharge. The itching has now stopped and the amount of discharge have reduced. I took a pregnancy test 2 days ago and it was negative. However, i have not had my period yet. Am i pregnant? Whats wrong with me? Kindly advise, thank you.