Everywhere online says that implantation usually takes place between 8-9 days after conception. Does this mean that the egg is travelling until then, or does it start to implant and this is when implantation is complete? How long does implantation take? I'm asking because I wasn't planning to conceive, but I did. I know when my last period was. 7 days after my probable date of ovulation I drank a large amount of wine. I'm really worried, and hopeful that this was before implantation so it doesn't matter?