Ugh, vaginas.

Okay, I know vaginas don’t necessarily smell good while women are on their periods but for some reason mine smells especially bad. Normally, my vagina is perfectly healthy and normal smelling and I’m able to wear just a tee shirt and underwear around my boyfriend... now while I’m on my period I’m very self conscious and wear granny panties and sweats to cover the smell as much as possible... anyone else have this problem? Anyone know how to fix it??