Watery Discharge- 20 weeks

em

I am 20 weeks and I noticed since about 18 weeks I’ve been having an INSANE amount of wet discharge. This is my first pregnancy where I made it to 20 weeks. It’s wet like straight water and sometimes it will be water with some white, it soaks through my underwear so I started wearing panty liners. I thought at first it was my fluid but I got swabbed and it was negative. Is this normal?