Week Description
Around 2 weeks after conception
(Counting from first day of last menstrual period)
Please keep in mind that each pregnancy is different and the growth rates vary from individual to individual. This information is based on general development. If you have any questions, please check with your gynecologist.
Fetal Development
Congratulations, the Implantation has occurred. The blastocyst is formed and settles in the uterus. A blastocyst is a thin-walled hollow structure in early embryonic development that contains a cluster of cells called the inner cell mass from which the embryo arises. The outer layer of cells give rise to the placenta and other supporting tissues needed for fetal development within the uterus while the inner cell mass cells give rise to the tissues of the body.
Multiples: Same as above times two, or three, etc. See week three for more information on twinning.
Maternal Changes
At the end of this week, you will be nervous not wanting for your period to occur, if you have been planning a pregnancy. Do keep in mind that a lot of the first pregnancy symptoms are very similar to those experienced at the time your period is due such as fatigue, cramps, breast soreness and mood swings. You may be confused, thinking that the pregnancy didn’t happen this month. A few more days and you will be able to put your confusions to rest.
Multiples: You probably aren't even thinking twins yet unless you've had infertility treatments, or there is a family history of multiples.