When Does Implantation Occur? Symptoms, What to Expect
Implantation is when an embryo burrows deep into the lining of the uterus, where it can then begin to grow. Implantation happens after fertilization, which is when sperm meets egg.
Implantation (embryology) - Wikipedia
Implantation, also known as nidation, [1] is the stage in the mammalian embryonic development in which the blastocyst hatches, attaches, adheres, and invades into the endometrium of the female's uterus. …
Implantation Signs and Symptoms: Bleeding, Cramps, and More
Sep 6, 2024 · Implantation is an essential early stage of conception when cells attach to the uterine wall. Signs of implantation include bleeding, cramps, discharge, and breast tenderness.
Implantation Symptoms & Signs | When does implantation occur?
Oct 2, 2025 · Implantation is the process of the fertilized egg burrowing into the lining of the uterus, which signals to your body that it's time to build a placenta, develop an embryo and connect it all …
Implantation Symptoms: The Earliest Signs of Pregnancy - Parents
Aug 31, 2025 · Implantation is when a fertilized egg attaches to the uterus, marking the start of pregnancy. Signs of implantation can include light bleeding and cramping, but not everyone …
Implantation Symptoms: Bleeding Signs, Timing, vs. PMS
Nov 17, 2025 · Implantation is when a fertilized egg attaches to the uterine lining in early pregnancy. This typically occurs six to 12 days after having unprotected sex. The process is not intense or …
Implantation - Embryology
The term "implantation" is used to describe process of attachment and invasion of the uterus endometrium by the blastocyst (conceptus) in placental animals.