I am 24 years old. On 28th may I had sex but accidentally the condom broke. Within 3 hours I took I-pill and experienced nausea. Fatigue amd dizziness. My expected period was on 13th June. On 11th June I saw slight spotting which I had never experienced before. On 12th I had severe pain. The flow was more than the last night but not as I have periods usually. The next day I experienced much less bleeding and today I did not bleed. I can not understand what is this. Please suggest.