Please help me 😫😩

Sooooo , something is really going on w| my vagina ... Like sometimes it itches & burns & its swells up & its so annoying , I don't think I have any STDS I've only been having sex w| one person & he doesn't have any STDs ... I've been treating myself w| vagisil ™ & I don't think its working. Has anyone had this happen to them ? If so please help me

(No negative comments Please & Thank you )