I have been on the nexplanon since 11/21. I bled for 3 weeks straight so my doctor had me take a months on birth control pills to stop me from bleeding and hopefully stop me from having one all together. My nipples have been so swollen and hurt really bad when I barely touch them for the past 3 days and its not getting better. Me and my boyfriend do have sex without a condom cuz I have the implant. I just finished the month of birth control pills today. I have read nipple soreness is a side effect of pregnancy but is also a side effect of the nexplanon it just has me a little worried?