My vagina smells like fish or metal sometimes normally after

Patient: My vagina smells like fish or metal sometimes normally after my period for a week out two… and has been itching but goes away. I just noticed its kinda sand paper like. I’m very hygienic. I also have a hard time getting horny..I’m only 19. I use to get excited at the slightest touch now I have a hard time even getting wet. What’s wrong with me??

Doctor: