I've been on the Implanon birth control for about 2 years now & every so often I really feel like I'm pregnant. I have been having pink spotting & brown spotting off and on for about a month now along with increased appetite, mood swings(which are normal with Implanon), cramps (which I just started getting for the first time about a month ago). Could I be pregnant or is it just my birth control messing with my mind/body making me think I am?