Is it normal to almost always be discharging? how can you minimize the smell? how can you prevent the stain on undergarments?

Not normal: To have frequent vaginal discharge. Best to see gynecologist to be checked for yeast overgrowth (happens with antibiotics or frequent douching or diabetes), bacterial vaginosis, or other sexually transmitted infection. Treatment of underlying cause(s) should clear up discharge & eliminate odor. If due to std, have partner treated as well to prevent reinfection.