How To Cure Pain And Irritation In Labia Due To A Cut?

I am a girl, 28 years,virgin and never had sex in life ..i am going to get married soon.. i m worried about a problem.few years back,when I was shaving my private area then i got a cut at a place where both labia folds are joint together (front part of labia and between clitoris hood) i didnt notice any blood or felt no pain..i ignored that but after few day i saw a small cut there..i applied olive oil..there was no pain,no irritation nothing ..but its been many years now cut is still there and has become a little wide ,1/4th of an inch size,no pain but it is streching because i sometimes rub that place during period when feeling itchyness .. i m worried if this cut is gonna hurt me during sex though currently is has no pain but size has increased in last many years ..thanks..