Does anyone elses discharge kinda get stuck in their vulva near the opening?

for the past year or two i have had watery discharge that dries almost as soon as it exits my vagina and hits oxygen. it results in white plaque like clumps that build up near my urethra and vaginal opening. on top of that mountains of it form on my underwear and it looks gross. it looks like i have an infection but im clean as a whistle! even my gyn is stumped. has anyone else dealt with this? i hate it so much. and nothing seems to help.