I have been on the Nexplanon (subdermal implant ) for about 3 months now. I went from the pill, to the Paragard IUD to the Nexplanon. I got the implant in January after my body rejected the IUD. For the first month I was on the implant, I didn't bleed at all. The second and third month, I had spotting most of the time. Yesterday, I started to bleed a bit and today I'm bleeding quite a bit and I also notice some clotting when I wipe. Is this normal or is this something to be concerned about? I have taken a pregnancy test every week, 7 days apart and all tests have been negative.