I had Implanon inserted in July 2009 and overall have been pretty happy with it. Over the first several months I would have irregular light spotting though since about the 10th month after insertion, the spotting would be slightly heavier and more regular (about every 31 days.) Now, about 3 weeks after the last "spot cycle" I have had a heavy period, similar to what I used to have before I used the product. It doesn't really bother me but made me wonder if it's a sign that the Implanon is no longer working. I just don't want to get pregnant! Any advice or common experiences would be appreciated :)