Gush of white discharge?

Torey
Im about 18 weeks along, and every couple days or so I'll get a gush of white creamy discharge that leaks out of me out of no where. Totally normal or should I be concerned? All my tests (swabs of my cervix) have been coming back normal, except I did test positive for ureaplasma. I finished my antibiotics for it and have been fine since, though they do not test for it again to see if it went away.