i got my 1st and last shot last november 2013 and had some spottings from december 2013 until may 2014. Im supposed to due on march 2014 but i chose not to make a follow-up shot because i want to have a regular menstruation again. I had sex once with my boyfriend a couple of weeks after my spotting disappeared. im pretty sure it was nothing because we are using the withdrawal method. i took a remedy to induce my period by taking overdosed vit.C for a week now... but still my period isnt back yet. what should i do? PLEASE HELP ME... :(