If I've taking Monistat 1 (tioconazole) && duplican && I still have a discharge what is going on? Is this an std?

Get checked . There are many causes of vaginal discharge other than yeast infections. If yeast medication is not working in this likely is not a yeast infection. Schedule a visit to get tested for stds as well as bacterial vaginosis. Then the doctor can find the appropriate treatment to help you.