I had my implant out on August 16, 2017 and still have not had my period. i had it in for over a year and a half. I have taken multiple pregnancy tests and they all come back negative. A couple day ago my boobs got really sore and they have been sore ever since. I took a pregnancy test yesterday 10/20/2017 and still negative but now I'm going on 3 months with no period and negative pregnancy test. what should I do?