What Causes Vaginal Discharge And Inflamed Labia Along With Itching?

Hi, my left labia recently became inflamed and slightly hard to the touch. I am sexually active as of recent, but have not had sex in about a week. The vaginal wall area started itching badly out of the blue and then that s when I discovered the inflammation. This week I have had some slight bleeding, well reddish very very light discharge. I felt like I cut myself with a new razor that has the built in soap stuff earlier this week, which may be the cause. I m just not sure is it s a weird ingrown hair thing, yeast infection, allergy, or worse. Thanks for your time.