Забеременеть с имплантом: как такое возможно? Выкидыш и имплант, зачатие через 4 недели после установки, опыт

Begging of this month i found out ive had a misscarage but im on the inplant and only had it since October!! How common is ot to fall pregnant on the implant? It showed that i conceive about beginning of November so i would of had the implant in for nearly 4 weeks