Clear liquids?

so I think it's pretty close to my period, I'm not sure. but these past few days I've been waking up extremely wet. I'd change my underwear and then 10 minutes later I'm wet again. and it's constant! it lasts all day long and won't stop. and it's a lot. like I soak through my underwear! 😭 Can someone please tell me what this is? and why it's happening?