I had unprotected sex about 2 days after my period so I knew I had to take some emergency contraceptive. I know the sooner it work the better but I took it about 48 hours later. The box said I should be getting my period during my regular cycle. Which I did. I had a "normal" heavy period that lasted about a week. But now after my period, I have gotten a yeast infection, I have pink discharge, cramps, and lower back pains. I don't know what this means and could use some help! Thank you.