Hello I am a 19 year old african american female . I have been on depo provera for about a year and my last shot was in november 2017. I have not had another shot since or used any other form of birth control . I have taken 2 off brand pregnancy tests which came back positive and two first repsonse which have super faint pink lines that u can only see in bright lighting but I also took a clear blue and it was negative .