You may have noticed some changes in your body that lead you to think you might be pregnant. The most noticeable is often that you’ve missed a period. Other common signs include feeling sick or nauseous, tiredness, frequent urination, constipation, or changes in your breasts (enlarged breasts, darkened nipples). To know for sure if you’re pregnant or not, you can take a home pregnancy test. Though these tests are believed to be 99% accurate when used correctly, you’ll want to confirm the results with your healthcare provider.