Dear Manisha,

I could definitely notice your anger and outrage towards me pointing and stating what you said is wrong. YOu however forgot the fact that I also mentioned I am sorry if this is offending.
Here is the question and best answer on as to when implantation takes place. It never takes place once and that's before you know you missed your period or before you know that you are pregnant. The start of increased hCG production takes place as a result of implantation. If implantation were to take place 6 weeks after conception then one would not use hCG as a maker to identify pregnancy.

When does the fertilized egg implant into the uterus?

The egg becomes fertilized with a sperm within 12 hours after ovulation, usually in the outer portion of the fallopian tube. It then travels down the fallopian tube, increasing its size along the way. In the fallopian tube it becomes the zygote and doubles to two cells, four cells, then eight cells and becomes the \";morula.\"; As it enters the uterine cavity it's called a \";blastocyst.\";

Implantation happens when the fertilized egg (blastocyst) attaches to the uterine wall and starts producing the pregnancy hormone hCG. Based on a study published in 1999 (Time of Implantation of the Conceptus and Loss of Pregnancy; Allen J. Wilcox, M.D. et.al. NEJM Volume 340:1796-1799) implantation happens on average 9.1 days after ovulation with a range of 6-12 days. In 84% of pregnancies implantation happened between days 8 and 10 after ovulation.

There was an increase of miscarriages when implantation happened later: The rate of early pregnancy loss was 13% when implantation happened by day 9, it rose to 26% with implantation on day 10 after ovulation, it rose to 52% if implantation was on day 11 after ovulation, and to 82% if implantation was later than 11 days after ovulation


Hopefully this educative message will help reduce your anger towards me and once again sorry to offend you. I however like elsewhere wanted to clarify the issue and bring the real reason.

Archie manisha replied. Archie,

I do not find anything in my message which made you feel I am angry.

Thanks for your educational post. Helps all.

manisha