Discharge

Hello,
This is my second pregnancy and I don't remember these things with my first 5 years ago. I took a very early pregnancy test and had back pain a few weeks ago and they said it was too early to see anything. Last time ninjas my levels checked they were going up. I am worried because I have some lower back pain(like tailbone area) and very light colored discharge. It's maybe light brown or faint pink. I've read its "normal" but I still should seek medical attention. Well it's the weekend, lol. Anyone have input for me? Thank you.