Anxious couples trying to conceive will look for any possible indication that they might be pregnant, often searching for signs just days after ovulation and more than a week before the expected period. The implantation of the fertilised egg into the uterine wall occurs during the time between ovulation and period, and while not always apparent, sometimes signs of pregnancy implantation do present themselves. Couples hoping to achieve pregnancy should not fear if they do not experience any of the signs of pregnancy implantation, as many pregnancies occur without any observable signs of implantation.
When a male's sperm fertilises a female's egg, the egg becomes a blastocyst about five days after conception, and it travels to the uterus to implant and become an embryo. Blastocysts that fail to implant do not result in pregnancy, so implantation is an extremely vital part of early pregnancy. During the implantation, the blastocyst burrows into the endometrial lining of the uterine wall and becomes connected with the mother's circulatory system.
Signs of pregnancy implantation typically occur between six and 12 days after ovulation. Women searching for signs of implantation should keep an accurate record of their menstrual cycle to determine when they ovulated so they'll have a record on which to base an implantation range. Because some signs of implantation include temperature shifts, women hoping to determine whether a pregnancy has implanted should be recording their daily waking temperature and be familiar with fertility temperature charting.
Typical signs of pregnancy implantation include one or more of the following: implantation spotting, implantation cramps, a temperature drop between seven and 10 days after ovulation and a second upward temperature shift after the temperature drop. Implantation spotting is a very light, brief spotting (often just a few drops of blood that may be brownish in colour) that occurs between seven and 10 days after ovulation. The temperature drop related to pregnancy implantation is limited to a single day, after which the basal body temperature rises higher and stays elevated if pregnancy has been achieved.
If the signs of pregnancy implantation are evident and a pregnancy is suspected, couples must still wait to take a home pregnancy test, because the body does not produce enough detectable pregnancy hormone until several days after implantation. Additionally, just because a blastocyst implants in the uterine wall does not guarantee that an embryo will develop and grow correctly. Many early pregnancies are lost after implantation but before a missed period, and many women are unaware that they were ever pregnant.
Couples trying to conceive should remember that even if signs of pregnancy implantation are evident, this does not necessarily indicate they are pregnant. The signs of pregnancy implantation frequently occur in women who do not become pregnant, just as women who do become pregnant may exhibit none of the signs of implantation. The signs of implantation should really only be used for speculation and not in an attempt to confirm a pregnancy before a missed period.