We had unprotected(condom  broke) intercourse on march 22 and I took plan-b within 7 hours. I had my periods on march 4(before sex) and next on april 4, earlier than expected. And it was not just spotting, it was real period. Periods lasted till april 10. But I got spottings after the periods around 19-20 april, but I still did not get my periods as of now, may 15. I got white discharge few days back. Is there any possibility of pregnancy? Or what is the reason of I am not getting periods? And when can I expect my periods? Is hormone imbalance could be the reason? Thank you.