Advice please!

Woke up last night to what seemed a lot more moisture than usual. Almost as if I had maybe "drizzled" on myself. Nothing on the bed though. I went to the bathroom then put on fresh underwear. Laid in bed for 30 mins, stood up, nothing. Went back to sleep, woke up, nothing. But now it's like a mucus discharge. Should I be concerned or is it just about time for baby? I'm 33+3.