Day 5-6: The embryo implants into the uterine wall on day 5-6 and marks the beginning of the placental formation. It is fully functional by week 11 when the fetus is no longer reliant on the corpus luteum.
Answered 1/30/2016
1.7k views
4 doctors weighed in across 2 answers
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question