I am only 12 and I’m on my period so I’m wearing a pad like normal. Yesterday I felt like I had nappy rash from my pad on my bum and I did and I treated it with cream. Later that night my vagina started to itch and burn so I had a shower and it helped for about 30 minutes . Today it is hurting again and I have paper cut like cuts on the big red bit inside my flaps and they are shiny dry and sensitive. What is this please please please someone help I’m too embarrassed to tell anyone