Implantation can be defined as:
- The attachment of a fertilized egg to the lining of the uterus
- The process of attachment of the embryo to the endometrial lining of the uterine wall
- The process that occurs when the embryo burrows into the endometrium and eventually connects to the mother's circulatory system
- The bedding of the embryo into the lining of the womb, the process where an embryo embeds in the uterine lining.
Implantation happens usually after the fertilized egg first the 'zygote' and then the 'blastocyst' arrives in the uterus about a week after ovulation and fertilization. Implantation then happens within 1-2 days after arrival of the zygote/blastocyst in the uterus, usually around 9 days after ovulation (dpo), with a range of 6-12 days.At that time, the blastocyst is barely visible to the naked eye, probably smaller than the dot above the letter "i".
Many women wonder whether this attachement of the embryo can be felt and if there are any other symptoms. There is no complete agreement even among experts whether implantation can be felt or not. Some women claim they can feel implantation while many pregnant women did not have any symptoms at that time.
Signs of implantation or possible pregnancy, however, are:
- Implantation cramps: small cramps inside the uterus
- Implantation spotting or bleeding: Short brief spotting (a couple of drops of light or dark blood)
- A second temperature shift on the temperature curve
- A temperature dip at about seven to ten days after ovulation
- These symptoms can happen with or without conception and implantation. In fact, all of these symptoms and these chart patterns frequently occur on charts that do not result in pregnancy. These signs are thus quite unreliable for early pregnancy detection, though they can offer some clues.
- Similarly, some women have typical early pregnancy symptoms while others don't.
- Most women have no subjective symptoms at the time of implantation, no bleeding or cramps, but some women report some drops of blood, the so-called implantation bleeding while others report small cramps. If you are among the lucky few who can feel implantation, then it may feel as if an angel is touching you inside the womb with the tip of one of the feathers of his wings.