Hi, I've been on the implanon for several months now, and I have yet to have a period, and I've been having odd symptoms, like an achy back, tender breasts, swollen feet, nasea in the morning, but I don't throw up, food cravings, mood swings and what not. I took two preganancy tests in the morning about a week ago, and both said negative, I'm not sure what brand they were, they were just generic cheap ones. I've heard from a lot of people that implanon can cause false negatives, and that getting pregnant on it is common, especially since I'm very over wieght. I'm scared, and I'm not sure if I want to got to the doctor if it turns out that thi is nothing... any advice?