Everything I read says that the most common day for implantation is 9dpo and that you then have to wait several days for enough hcg for a test to be detected so that would be 11dpo.. However FRER says that at 5 days before period so 9dpo its 76% accurate.. why do people say it is to early at 9dpo when it's meant to be 76% accurate and most people on here tend to have a faint line at 8-9dpo??