It sounds very much like your body has been preparing for your periods to begin before too long. An increase in discharge, mood changes, and other symptoms can happen well before periods actually begin. What you are experiencing might be your first period as it does not always start with red bleeding.

As long as it does not itch, burn, or have a strong odor, it is likely not a problem. Certainly if it causes you to worry, speak to your mother or another trusted adult about it.