Soap burns???

So I think my soap burned my goodies

I usually use gentle soap bc my body can’t handle reg soap and a few days ago I used it ti wash my cooca bc it was a long hot day and I was feelin crusty. Obv I don’t go inside the vagina but some soap got into the hole right at the opening and I think my skin bubbled up from it and now it’s itching 🥺 how do I I fix this