Can't get rid of vaginal discharge i been had for 3 mths. no treatment is working. no std?

Discharge is normal: It's normal to have some discharge every day. What's not normal is discharge that smells funny or causes itching. Or excessive discharge such that it's wetting your panties a lot. If that's the case, and you've been checked for infection, it's likely something in your environment that your body's responding to. Either a soap, a lubricant, your boyfriend's condom (like an allergy).