hi i am 16 i have had the implanon in for 9 months now. but right now i am 19 days late on my period... on the 31st march which was the last time i had my period my boyfriend and i had sex on my period... i had bron stuff for the 3 days after that then it stopped started having symptoms of pregnancy such as cramps, fevers, bloating and more i have all the pregnancy symptoms . i took a PT today it was negative... what is going on? :( please help thanks!