Hallow Dear, You did have unprotected intercourse in fertile window of your cycle. However, you have very scientifically covered it by I-pill which is an emergency post coital contraceptive pill. These pills need to be taken ideally within 24 hours of but not later than 72 hours of the unprotected intercourse. You taken them within 24 hours. Great! When taken within prescribed time, these pills are very effective in preventing the pregnancy. So you need not be worried about pregnancy. These pills are Progestational pills, hence they cause some amount of bleeding few days after their consumption; moreover, they may delay next period by few days to about a week. You have stared getting signs of period by some bloody discharge. This is expected after the pills. So please wait till your menses start in full flow. You do not seem to be pregnant. I hope this helps you. Dr. Nishikant Shrotri