What Causes A Vaginal Discharge With No Odor, Itching, Pain Or Smell?

I have a yellowish discharge no odor no itching no pain no smell. But when it comes out it gushes out like I was on my period or like how semon comes out of you. This has been going on for a month and my period as longer than normal this month. My tubes r tied and burnt no rashes what could this be?