Discover how pregnancy affects the health of teen mothers and their babies. Teenage pregnancy occurs in a woman 19 years of age or younger. Other teens may hardly eat at all due to frequent bouts of nausea and vomiting. An early sign of teenage pregnancy is unusual moodiness, according to teen pregnancy statistics 1 3. Increasing hormone levels can cause pregnant teens to become uncharacteristically irritable and jumpy. Missing one or more menstrual periods is the classic sign of pregnancy. But this can be tricky for teenage girls, whose periods arent yet regular. The symptoms of teenage pregnancy are vomiting, missed period, breast enlargement, fatigue, stomach cramping, increased drowsiness, stomach cramping and irregular vaginal spotting. In most of the cases these symptoms are unnoticed and the girl comes she is pregnant when she feels the movement of fetus. do you think that you or someone you know might be pregnant? Learn about these 10 early signs of pregnancy and find out what to do next at webmd. Teen pregnancy prevention how to avoid unpleasant consequences? Teenage pregnancy. Dont miss the earliest pregnancy signs! Find out more about pregnancy symptoms and when you should notice them. While pregnancy tests and ultrasounds are the only ways to determine if youre pregnant, there are other signs and symptoms you can look out for. You may actually recognize pregnancy symptoms in your daughter before she recognizes them herself. The first trimester of a pregnancy can feel quite similar to a bout with the flu, so your daughter may not realize her condition. Remember that these symptoms do not necessarily mean pregnancy - many of these signs could mean something else. Some of the other early pregnancy signs and symptoms are listed below. Every woman is different and not all women will notice all of these symptoms. This is commonly known as morning sickness, but it can happen at any time of the day or night.