odour ?

so i have this odour down there, it’s not fishy or anything. it’s more musty ig and sometimes it’s strong. i feel like maybe i get sweaty down there??

but i did get tested in september and all my tests for BV, trich, and sti’s came back negative. anyone else experience this and can maybe help. i’m gonna start washing w water after every bathroom use (w a water bottle or something) hoping that will help. any advice is welcome !