I had bleeding 13th-15th day of my cycle due to ec pill taken on 5th day of my cycle. when can i expect my normal periods?

Plan B & bleeding: Taking an emergency contraceptive like plan b(levonorgestrel) can cause some irregular bleeding. This is one of the most common side effects. Usually, your period will happen around the normal expected time, and your bleeding will return to normal after that. If your period is late, it is crucial to take a pregnancy test right away. Plan b reduces but does not eliminate your chance of pregnancy.

Next cycle: Emergency contraception can cause the next period to come sooner or later, but after that, cycles should go back to normal. Be sure to use regular birth control if you are sexually active. There are many options. It's good that you knew about emergency birth control, but regular birth control is more effective.