Fluid or Discharge?

Brooke • ❤️AxtonLayne❤️Feb.10,2016❤️
Okay so I'm 28 weeks and 2 days. I always sleep naked, always have. So last night I kept noticing through out the night my hooha and my thighs were wet. It wasn't a thick sticky feeling like discharge. Kind of reminded me of some discharge before I was pregnant where it would just feel like water. Has anyone else experienced this? Is it just discharge or should I worry about leaking fluid?