18w3d light pink discharge..HELP

La • Mommy to a gorgeous little girl ❤️ 12.21.16❤️ Due 8.24.18
I have the slightest pink color to my discharge. I had a miscarriage a month before I got pregnant with this baby so naturally im freaking out. I did nothing different, didnt have sex or a pelvic exam. What should I do?!