Hello, I have a question about the implanon? I had the mirena from january 2009-september 2011. I had no periods that whole time. I took the mirena out and put the implanon in in october . I have not had a period the whole time until recently. I am worried. for over two weeks i ve been having brown stuff in my underwear, like spotting. but abnormal looking to me. I am wondering if I should go to the doctor? I want to make sure there is nothing abnormal, or if my immplanon isn t working anymore. When I had the depo shot two before i had my daughter in 2008 and never had a period on that either. I ve never had one while on those types of birth control. so it s worrying me that i m having spotting, that it s brown and not like a real period, and that it s been going on over two weeks.