Ok so my period is 5 days late, I had the implant in since 2012 after having my daughter in 2011... this is my 1st time tracking my period... I got the implant took out in March 2017 & didn't have my 1st period till 7th June & ended on 11th... I'm unsure if my periods are regular or not & im scared to take a test :( scared of getting a BFN

When should I take a test? I did take one day after AF was due with a blue dye test & it was negative but heard blue dye are rubbish for seeing vfls... when should I test? I do have a 1st response test