Hello, Thank you for asking your query at DoctorSpring.
The presence of burning micturation during menstruation, pain during sex and discharge per vagina point towards two possible diagnoses in your case:
I suggest you visit a gynaecologist as a definitive diagnosis can be made only by doing a swab examination. If it's a yeast infection, anti fungal medications such as Lotrimin, Monistat are available as ointments, tablets or suppositories. If it's a bacterial infection, Metronidazole tablet is taken twice daily for seven days.
I suggest you to follow the following , will bring you relief of your symptoms and prevent recurrence:
Its always important to maintain good hygiene, this is the basic step to stay away from infections. I suggest you to rinse your vagina everytime you take bath with cool water. Its best to nt use any scented products like scented soap in your vaginal area. Wear clothes that are not tight and in which you are comfortable. It s best if you avid sex till your infection heals completely.
Hope this helps. Please feel free to ask follow-up questions