What are the first things you will notice if your pregnant ?

Some subtle changes: A woman of childbearing age who has some nausea (with or without vomiting), some fatigue (feels less energetic), a sharper/stronger sense of smell, mild soreness or mild swelling of her breasts, and maybe some food aversions and food cravings . . . Could be pregnant. Symptoms can occur before missing a menstrual period.

Missed period: Missed period. First and foremost. After that it is highly variable. A lot of women have no other symptoms. Some women experience morning sickness as early as 4 weeks. Some never have it. Some complain of breast tenderness, some not. Early pregnancy is so variable. The only consistent symptom is missed period.