Hi, Welcome to Health care magic forum.
Being a minor and not experienced in shaving, there may be scratches on the skin, and get infected, and may form boils
The reason for white discharge may be the infection, or gastric hyperacidity
I advise you to consult a doctor for diagnosis and treatment.
I usually prescribe to my patient with such symptoms fluconazole
, cifixime, and ranitidine
Take more of green leafy vegetables, pulses, and sprouts and
Protein rich foods to develop the resistance against such infections.
Wishing for a quick and complete recovery, Thank you.