I had unprotected sex with my partner on 26th of November 2013, and took an emergency contraceptive with in 12 hours, however as mentioned in the leaflet, I did not get any bleeding after 7 days.
I am a PCOD patient, hence I had taken "Meprate" to have my periods. I started taking meprate from 2nd of December and my periods went on from 8th to 15th December. I stopped bleeding after that. I had protected sex during the last days of my periods.
However, the main problem is , I have started bleeding all of a sudden from today i.e 23rd Dec . And I have no clue of what is happening right now.
Could you please help me out and tell me what may be the possibilities of the same as early as possible.

There is many, many possible. It is very likely due to the morning after pill, which has many side effects. If it appears to be regular period, and ends, just wait a month to see if periods start back as normal

From the various sites that I came across.. the possibilities included were hormonal imbalance , pregnancy or cancer. I was ready for the first one. But the other two I came across were pretty scary for me. Could any of that be possible by any minute chances ?