When Do Early Signs of Pregnancy Occur?


When you're hoping to be pregnant, the 2-week wait to take a pregnancy test can seem interminable. Because the body begins to go through hormonal changes almost immediately upon conception, there are some signs that occur early on that can indicate a possible pregnancy. The lack of these signs does not mean you're not pregnant; they are, however symptoms that do occur in some women before a positive pregnancy test.


  • One of the first early signs of pregnancy is implantation bleeding. Between approximately day 10 and 14, the embryo implants in the uterus, which sometimes causes a small amount of spotting.


  • After conception, the body produces progesterone, which is responsible for nausea. You may begin experiencing nausea as a pregnancy sign as early as the first 2 weeks following conception.

Olfactory Changes

  • Your sense of smell may become very sensitive, though the reason for this is not known. Favorite aromas, such as foods or perfumes, might just turn your stomach as early as the first few days post-conception.


  • Heartburn is a common early sign of pregnancy that may occur within the first 2 weeks following conception. Hormone levels rise, relaxing the digestive tract and causing acid to back up in the esophagus.

Breast Changes

  • Swollen and sore breasts frequently occur as early as the first week of pregnancy. This is caused by rising hormone levels.


  • Fatigue is an early sign of pregnancy that often occurs in the first 2 weeks after conception. Progesterone----which is produced by the body in high amounts during pregnancy----makes you feel sleepy.

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