How to deal with a little inflammation in the routine check of leukorrhea

Patient's question:

Age: 26
Doctor:
Hello! Two days ago, I went to the hospital for a routine vaginal discharge test, and there were no signs of yeast or trichomoniasis. Additionally, you can give your child some brown sugar ginger water, but it's recommended to use it occasionally. You can also give your child foods that help moisten the lungs, such as pears and lily bulbs. Later, I bought a box of Jinfukang brand Xiaomi Shuan (a box contains 5 pieces) from a pharmacy. After use, there were always some white and brownish residues left in my vagina. I'm quite worried now—don't know if it's a fake medicine or a normal drug reaction. If it's a normal drug reaction, how many more boxes should I use?
If it's fake, what should I do? Will it affect my future ability to get pregnant?

Doctor's answer:

It's best to go to the hospital for a check-up to rule out the possibility of vaginitis. At the same time, a routine test of vaginal discharge should be conducted to see if there is any signs of infection. Once the cause is identified, targeted treatment can be recommended. Married couples should be treated simultaneously.
Underwear and pants should be washed separately. If possible, disinfection should be performed. After washing, clothes should be exposed to sunlight. During treatment, sexual intercourse should be avoided to prevent cross-infection.
Recommendations: Maintain cleanliness and dryness of the external genitalia. Avoid scratching, hot water washing, and using soap. When infection occurs, use potassium permanganate solution for Sitz baths. Underwear should be breathable and loose-fitting. Avoid alcohol and spicy or allergenic foods.