"nexplanon is my best friend. as a sexually active teenager, pregnancy is my worst nightmare. with an effectiveness of 99.95%, i can breathe easy and enjoy my relationship with my boyfriend in a responsible way. of course with all drugs, there are side effects. the first 4 months or so i was bleeding almost all the time. that really sucked. however, the 4 months of off and on bleeding is way better than get knocked up in my opinion! i have been on nexplanon since january of 2016 and each month i experience light bleeding. nexplanon&#039;s job is to keep me from getting pregnant. and it has done its job!"