If you're a teen who is sexually active, pregnancy is always a possibility. Even if you've used protection, there is a chance that it may have failed. If you suspect you may be pregnant, see a doctor right away.
A missed period is often the first symptom noticed by women to make them suspect pregnancy. Some women also experience a much lighter period than usual early in pregnancy, though this is usually due to implantation bleeding and not a true period. Implantation bleeding occurs when a fertilized egg burrows into the wall of the uterus.
Nausea and Changes in Appetite
Nausea, queasiness and vomiting are all early symptoms of pregnancy. "Morning sickness" can come at any time of the day, so even if you're feeling nauseous in the afternoon or evening, it could be a sign that you're pregnant. Morning sickness commonly occurs in reaction to unpleasant odors and causes many women to lose their appetite. Conversely, you may feel hungrier than usual even very early in pregnancy, as your body is using more energy.
Frequent trips to the bathroom may be a sign of pregnancy, as the swelling uterus puts more pressure on the bladder. Another cause of frequent urination during pregnancy is that the kidneys are producing more fluid.
Fatigue, Dizziness and Mood Swings
Fatigue and dizziness may occur early in pregnancy due to lowered blood sugar as your body makes feeding your baby a priority. Mood swings and headaches are common as well, due to rapid hormonal changes.
Breast tenderness often occurs early in pregnancy when your body prepares to produce milk for your baby. This is often a confusing symptom, as many women have sore or tender breasts just before menstruation.
Because many early signs of pregnancy are also common symptoms of upcoming menstruation, taking a home pregnancy test will help you know for sure whether or not you're pregnant. Home pregnancy tests are most accurate when taken after a missed period. A negative test is not always certain, as your body may simply not have produced enough of the pregnancy hormones that the tests look for yet. Take another test a couple of days later if menstruation doesn't occur. If your home pregnancy test is positive, if you doubt your negative test, or if menstruation never occurs despite several negative tests, see a doctor as soon as you can. As a sexually active teen, even if you do find that you are not pregnant, seeing a doctor would be wise to rule out any sexually transmitted diseases or infections.