Why does my vagina smell unpleasant?

This could be from your menstrual cycle, hygiene habits the amount of acidity present, ,the iron in your blood giving a metallic odor. The amount of bacteria in vagina can cause a sweet smell and a build up of urine can cause a ammonia odor. If all these odors persist than see your OBGYN doctor for remedies.

It is not feasible to provide a meaningful opinion without examining you. You should consult gynecologist. For info in this topic: https://www.mayoclinic.org/symptoms/vaginal-odor/basics/causes/sym-20050664#:~:text=Bacterial%20vaginosis%20is%20an%20overgrowth,doesn't%20cause%20vaginal%20odor. Get HPV vaccine Wish you good health!