For over a week, I have had a kind of vaginal infection that is causing irritation and greenish discharge. Is there a medication available at the pharmacy for that?

Yes, there are over-the-counter treatments available at pharmacies for vaginal infections that can help with irritation and unusual discharge. It would be best to visit a pharmacy to inquire about these options. If there is a fishy odor associated with the symptoms, it is recommended to consult a doctor.