I am unmarried.I had sex first time 2days before. It was unprotected. After 13hrs i took i pill contraceptive.I do not get any of the harmful symptom like vomiting,headache,or bleeding etc. Now my question is that my last period was on 12th of nov. Is there any chance of delay in my periods or harmonal imbalance? If yes then how long lasting are the effects of i pill? Will it come back to normal if found irregular? I am really afraid ...because i have seen many videos saying never take i pills..