Hello, i m 20yrs old , i had my last period on 20 dec 2013. On 4jan we had unprotected sex and took ipill immediately after sex. My periods again started at 8th jan 2014 and lasted for four days. It was normal. Bt now on 17th jan again it started bt dis tym the flow is heavy and the blood is bit thicker and followed by abdominal pain. Three days has passed till nw. M really worried . what should i do ? Plz help