I was on the Depo shot for 2 years and switched to the Implanon implant, I've had my Implanon implant for about 3 months now. I rarely had a period during those 2 years on Depo. The 1st month being on Implanon i had no period, or spotting. After the 1st month came & gone i experienced spotting for about 2 days. Last month i had a pinkish/brown discharge for 1 day. Im afraid i may be pregnant, i have taken 2 home pregnancy tests & both resulted negative. Could that discharge possibly have been implantation blood?