Pregnancy discharge green/yellow tint

I’m 16 weeks pregnant and for the last month I’ve had excessive amounts of discharge. I got a BV swab at my OB a couple of weeks ago and it came back negative for bv markers, candida, C. glabrata, c. krusei, and trich. However, I’m still having a lot of discharge and now it’s starting to have a greenish yellow hue. It looks mucusy. Has anyone experienced anything like this before? I’m going to my OB soon but I’m not sure what this could be. I’ve been in a monogamous relationship for almost 5 years so I’m hoping it’s not an STD but at this point I’m not sure if this is normal or what else it could possibly be. Please help! ☹️