Final answer:
The described symptoms suggest trichomoniasis, warranting a diagnosis via wet mount microscopy and treatment with metronidazole, an appropriate antibiotic for this condition.
Step-by-step explanation:
The symptoms described in the question, such as copious, frothy green-yellow discharge, odor, itching, and the presence of a strawberry cervix, are suggestive of a vaginal infection, possibly trichomoniasis. A microscopic examination of the discharge, often called a wet mount microscopy, can help identify the causative agent by looking for the characteristic trichomonads. Metronidazole is the treatment of choice for trichomoniasis, which is typically administered orally.
Treatment should be extended to sexual partners as well to prevent reinfection. It is important to confirm the diagnosis with the appropriate diagnostic test, and to treat the condition with the right medication to ensure a quick and effective resolution of the symptoms.