gush of watery fluid but not my period HELP?

Bianca
I'm not pregnant, although I have been feeling so nausous lately and the last few days when I stand up clear (like water) fluid comes out and it's enough to feel if come out like a period and leaves my undies wet enough to change them.
Anyone ever had this or know what it is? 
Definitely not pee ( was clear and didn't smell at all) 

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