Hi, I understand your concern. Vaginal itching at menses can be due to- - Allergy to Sanitary products ( like scented pads/ material of the pads) - Bacterial infection following hormonal changes during menses- But this gives a fishy smell.. & you don t have it. - Fungal infection. Fungus that is in dormant stage in your body.. gets good medium for growth ( blood) during menses.. & starts flourishing during menses & stops growing with stoppage of menses. You need to use Fluconazole vaginal pessaries during menses to prevent it. Oral Fluconazole can be taken in single dose for a prolonged complaint. - A strict genital hygiene with frequent change of sanitory pads & cleaning with clean water is a must. - The infection is completely treated by treating both sex partners together. Thanks. Thanks.