In theory you can remove Implanon return to a normal cycle immediately and conceive, which is what happened to my sister. On the other hand, I have been off Implanon for 10 months and have been TTC all that time. I was speaking to a dr the other day and they said it can, in some cases, take a while for your hormones to get back to normal after Implanon. I had a 21 day cycle for the first 5 months off Implanon and am now out to 25 days.

Best of luck.