If you are 17 days late for your menstrual cycle and experiencing contractions along with discharge, it could potentially be a sign of pregnancy. However, it is important to note that these symptoms can also have other causes. To determine if you are pregnant, the most accurate way is to take a home pregnancy test or consult with your healthcare provider for further evaluation. Contractions during early pregnancy are not common and could indicate other issues such as an ectopic pregnancy or miscarriage. Discharge during early pregnancy can vary in color and consistency but is usually milky white or clear without any strong odor. If you suspect you might be pregnant, it's best to seek medical advice for proper diagnosis and guidance.