Help- Just leaked water from vagina while having sex

Mani

Hi,

I am 21w today n while having sex about half cup of water like thing but it was not at all painful and I did even know that water is coming out. My husband told me something is gushing put of my vagina .

I am feeling strange ,who something can come out of my vagina without me knowing. It still doesn't pain at all.

Any idea anyone.