Hi. I am currently on nexplanon. I have been on it since March 28, 2016. Since being on the implant, I have had long periods lasting from two to three weeks with medium to light flow. The last time I had sex was on February 14 2017. At that time I was spotting and continued to spot for about two weeks. I have not had my period this month. I have taken a
pregnancy test on March 15th, 18th, and 20th and all of them have been negative but I still have not had my period. Should I be worried about a possible pregnancy?