Girl, usually within a few days to a week na bumalik ang period after removal, pero honestly bawat katawan talaga ang dalo kaya walang exact timeline, may kaibigan kaming 3 days lang, may isa naman almost 2 weeks before dumating ulit, it varies! Possible bang mabuntis right after removal? Yes, kaya if hindi pa gusto ng baby, dapat may backup contraception na agad habang naghihintay ng cycle mo, okay? Best to ask your OB about it para sure ka sa timeline ng implant mo specifically at kung may recommendations sila for transition to another method.