hi, me and my bf had sex on 29th December, and i took ipill after 4 hours. my last period happened on 17th December, and period date is on 15th January. my period is very much regular but, after taking ipill i had period on 4th January which is 11 days earlier than usual. and now it is 13th January, still I'm facing brown spotting and bleeding. I'm really scared and confused about my physical condition. am I pregnant? or having any serious disease? and was that a real period?