Implantation generally occurs 5 to 7 days after fertilization takes place. This process happens when a fertilized egg travels down to the uterus and successfully attaches to the uterine wall, which officially marks the beginning of a pregnancy.
While many women do not notice this happening, others may experience subtle physical signs. Common symptoms include mild abdominal discomfort that feels similar to menstrual cramps or a light discharge. This spotting can appear pinkish or look like dark coffee grounds. These signs are often the very first indicators that conception has occurred.
Fertilization itself requires you to be in your fertile window, which is normally about 14 days before your period begins. During this time, an egg remains viable for 24 hours after release, while sperm can survive in the body for up to 72 hours to meet the egg.
Because these early symptoms are often very subtle, the best way to be sure is to wait for more obvious pregnancy signs a few weeks later. If you suspect you might be pregnant or experience unusual bleeding, it is best to consult a gynecologist for confirmation.