Should I call my doc!

I had the nexplanon for 3 years! I took it out about 5 weeks ago! But I havent get any period or spotting! I had my period on time for the last 7 months on the same day until last month that I didnt got it! My period is late for 14 days already! I had a pregnancy test it was negative! When is the right time to call my doctor? Should I wait this month?