Please help me

Monisha
I got my implanon taking out on January 11, 2016.. I ovulated around Feb 1,2016 the 5 week After the Implanon been removed.. ...Note ... I haven't had a period while on implanon . and I haven't had one since it's been taking out... This will make today 8dpo .... I got a bfn... So since I haven't had a period... When should I take the test...