I woke up at night from light moisture, as if something is leaking. I …

I woke up at night from light moisture, as if something is leaking. I see brown color, but without mucus. More liquid, maybe with a small admixture. Went to the toilet, after 30 minutes again I feel wet and again brown discharge (it feels like the first day of my period). Is this a plug? But as far as I know it should be like jelly or mucus? And I have a liquid brown color.