For the past two months, i had my period one day and one day only. I had sec last friday the 11/12/2015 and got the morning after pill on the 12th... I got my period on the 18/12/2015 and it is the first time in ages i have a proper flow. Today, the 20th, i cant move with the pain. Its like proper period/labour pains, pressure in lower tummy and vagina. Im actually screaming with the pain. Could there be something wring or is it normal! HELP