13w6d pregnant. vulva (labia and vagina opening) are moist/wet. don't see color or detect particular smell. i'm not gushing or dripping. amnio fluid?

Not likely: Women tend to "run a bit more wet" when they are pregnant. Can get to the point of needing a panty liner. As long as no itching or discharge, usually not a problem. Also, with pregnancy weight gain, we tend to sweat more in the groin area. Your doctor can test the fluid with ph paper, or look under a microscope for ferning of the fluid on a slide.