Embryo implantation timeline...Your thoughts

If you are anything like me and spend any time on google following a transfer, you would no doubt have come across this timeline.

I have even found it on a US clinic website! However, has anyone ever had it verified? I am dubious given so many women get positive hpts 8,9 and 10dpo.

What do you think???

3-Day Transfer
Days Past Transfer (DPT)
*One - The embryo continues to grow and develop, turning from a 6-8 cell embryo into a morula
*Two - The cells of the morula continue to divide, developing into a blastocyst
*Three - The blastocyst begins to hatch out of its shell
*Four - The blastocyst continues to hatch out of its shell and begins to attach itself to the uterus
*Five- The blastocyst attaches deeper into the uterine lining, beginning implantation
*Six Implantation continues
*Seven- Implantation is complete, cells that will eventually become the placenta and fetus have begun to develop*
*Eight - Human chorionic gonadotropin (hCG) starts to enter the blood stream
*Nine - Fetal development continues and hCG continues to be secreted
*Ten - Fetal development continues and hCG continues to be secreted
*Eleven - Levels of hCG are now high enough to detect a pregnancy

5-Day Transfer
Days Past Transfer (DPT)
One- The blastocyst begins to hatch out of its shell
Two -The blastocyst continues to hatch out of its shell and begins to attach itself to the uterus
Three- The blastocyst attaches deeper into the uterine lining, beginning implantation
Four - Implantation continues
Five- Implantation is complete, cells that will eventually become the placenta and fetus have begun to develop
Six - Human chorionic gonadotropin (hCG) starts to enter the blood stream
Seven- Fetal development continues and hCG continues to be secreted
Eight -Fetal development continues and hCG continues to be secreted
Nine - Levels of hCG are now high enough to detect a pregnancy

Hmmm... Interesting. It doesn't seem entirely unreasonable, except that I would see it as an example of a timeline, rather than the definitive timeline which is accurate for everyone. After all, prevailing wisdom when not using AC is that implantation happens anywhere from 6-10 days post ovulation.

Not everyone who ends up pregnant gets a bfp at 8dpo, though some do. However pretty much everyone would get a bfp by 14dpo if it is going to happen, ie, there is a fair chance of false negatives at 8, 9, 10 dpo, and very little chance of false negatives at 14dpo. If I were publishing this timeline, I'd make it so that it encourages people to wait to test, rather than encouraging them to test too early.

I had very strong pains on the left hand side 4 and 5 days after transfer and got my BFP 9dpt. When I had my first ultrasound on Tues the tech confirmed it had implanted on the left.

Amy, was that a two, three or five day transfer?

When I spoke to my OBS, I asked about my due date and also about implantation a few days after a five day t'fer but he was adamant that that due date is almost 100% accurate (well as accurate as a due date can be ;P) I can't remember how many DPT I was when I got my BFP, I think about 9 but it was feint but I wasn't convinced I was pg.

I had a 5 day transfer, and had implantation bleeding 4dpt, so the timeline would be correct for me. Then had positive poas at 9dpt, so again, appears to apply to me. With DS2 which was a natural pregnancy, i had implantation bleeding at 10dpo, and had positive poas at 14dpo, which fits in with the timeline. I agree though, its probably just a guide and not the rule.

It was a 3 day transfer N2L :)

Pretty sure it's not as definitive as that, but maybe? I was given the impression that implantation can take varying times. But I never POAS, so i wouldn't know! ( :redface:)

i had a day 5 transfer that was hatching and i had spotting for the next 24-48 hours which the clinic said was consistent for when it should be implanting, i got a postive hpt on 11dpo and my numbers were good when i had the blood test but it ended in a miscarriage as it didn't grow past 6 weeks

If you assume it's an "average" timeline, then you'll always have some earlier and some later.

However, you could also be cynical and think that perhaps the clinic doesn't want its patients testing early and so they say not to test before 14dpo (you could possibly still be picking up the trigger until as late as 12dpo anyway, although the average is less than that).