Pregnancy symptoms can begin as early as 1 week after conception for some women. Others may not notice signs until 4-5 weeks or later.
Earliest Symptoms
The first signs often include sensitivity to smell, tender breasts, fatigue, and elevated basal body temperature, appearing around 3-7 days post- conception. Implantation bleeding or cramping may occur 6-12 days after conception during embryo attachment.
Common Timeline
By 5 weeks pregnant (about 1-3 weeks after conception), 50% of women report symptoms; this rises to 70% by 6 weeks and 90% by 8 weeks. Nausea, frequent urination, and mood swings typically start around 2-8 weeks post-conception.
Variability Factors
Experiences differ based on individual sensitivity to hormonal changes like rising progesterone. Some detect symptoms within days, while others wait until after a missed period.