Good evening, ladies, I have such a situation. B1 term is 33 weeks. I …

Good evening, ladies, I have such a situation. B1 term is 33 weeks. I am wiping myself every day in the morning and evening. Accordingly, I change underwear. Today in the evening I started wiping and look at underwear such stains like water spilled and stains. Without any other discharge except white discharge, but the doctor said that it's normal. But about the stains, I don't know for sure. Nothing hurts, nothing worries me. On Monday for the 3rd screening. On Tuesday to the doctor for an appointment. What could this be?