I had my first implant may 2013 and had it replaced in April 2016 and then had it removed 20th June (5 weeks ago) as me and my partner are looking to start trying for a baby. I haven't had a period since November 2014 so it's been a while since I've had any activity! How long should I wait before getting concerned and seeking medical advice regarding the return of my period? I know I'm not pregnant I've taken a number of tests in the past two weeks to be sure.