White discharge when I wipe and in my underwear? What could cause it or what is it from? Could I be pregnant?

Infection & hormones. Some vaginal discharge can be normal. As you go through the month your hormones cause changes in the discharge. In some cases though discharge can be a sign of infection. Causes incluse yeast, bacterial vaginosis, and stds. There are simple tests that can be done in the office to determine if this is normal or not. If you think you might be pregnant check then check a home pregnancy test.