Hi! My name is Ben Campbell. I work as a Digital Marketing Executive at the Voice of Woman, and I blog about Health and fitness. While pregnancy tests and ultrasounds are the only ways to determine if you're pregnant, you may search for additional signs and symptoms like morning sickness, exhaustion, and more. Though it may seem strange, your first week of pregnancy is determined by the date of your last menstrual period. Even if you aren't pregnant yet, your last menstrual cycle is considered week 1 of pregnancy. The predicted delivery date is computed using the beginning day of your most recent period. As a result, you may not have symptoms during the first few weeks of your 40-week pregnancy. You can read our blog post on the <a href="https://www.thevoiceofwoman.com/how-early-you-can-expect-pregnancy">premenstrual syndrome</a> to understand it better and learn about its causes and symptoms.