How can severe vaginal infection be treated and what can be the cause of such a bad infection. how long does it takes to heal?

Need to examine: It would depend on the causative agent of the infection and treatment would need to be tailored to the bacteria, fungus or the relevant agent. You should consult a gynecologist, as it would require an examination and may be culture. Wish you good health! - Have a diet rich in fresh vegetables, fruits, whole grains, milk and milk products, nuts, beans, legumes, lentils and small amounts of lean meats. Avoid saturated fats. Drink enough water daily, so that your urine is mostly colorless. Exercise at least 150 minutes/week and increase the intensity of exercise gradually. Do not use tobacco, alcohol, weed or street drugs in any form. Practice safe sex, if you have sex. Get HPV vaccine