I got nexplanon implanted in October of 2014 after having my son in August of 2014. It has caused me to have an almost constant period for the last 6 months. But about a week and a half ago, it stopped. Me and my fiancé had unprotected sex . And today I have had a pink discharge. Should I be worried about pregnancy in your opinion? Or is that possible on this birth control? I definitely do not need another baby right now.