Does anyone know what this is ?

Does anyone know what this is/means ? I'm not super sexually active Ive only had oral sex so I'm not sure what's going on. It just started mildly itching out of now where ! Its on the entrance ?!? Of my vagina

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It looks like its cracking ? My vagina never looks like that. Also aside from oral vaginal sex I am a virgin

could be alot of things but u mentioned u only gave oral if u masterbated with ur saliva anytime after u gave oral it could be an std like hpv but if u didnt its prolly just vp or vagititis maybe even a yeast infection