I had the Nexplanon implant put in on August 16, 2016, and I did not start having unprotected sex until January 2017. Since then my boyfriend and I have been regularly having unprotected sex, and he has ejaculated inside of me (sorry for the TMI, but vital information). I was due to start my period on April 3, 2017, and it didn't come. I took several tests and they all came back negative. On April 17, I began spotting -- and I assumed it was my period, and it only lasted three days. It is now May 19, and I have been spotting stringy, mucus-looking brown discharge since May 4. My period has been irregular since I first started years ago, but I have never spotted -- not even when I first started on Nexplanon, which I know is unusual. I was just wondering what the chances of me being pregnant while on the implant are, as I have had other symptoms (weight gain, increased irritability, change in appetite, etc) since then as well. Thank you for any and all information and advice!