Somebody please help

Ana • J.A Lopez 2/19/16!!have an 11 year old son too! My boyfriend is first time daddy :) 🍼🍼🍼🍼👶🏻🍼👶🏻👶🏻
This morning when I went to work, went to the bathroom and noticed on my underwear a light brown discharge. Wiped and same very little and in my pee was clear. Later on thru the day no discharge happened..What does this mean? Has this ever happened to anyone?