What Is The Treatment For Swollen And Itchy Vagina?

Hello, I have just gotten over my period about 4 days ago and I noticed a slight itch in the inside of my vagina. I inserted my finger in and i feel like my insides are swollen. Possibly the vaginal walls? I have never felt this before. It feels like it is hard to even fit a finger in there. I have inserted my finger before and was able to move it around. Now it is tight and feels very swollen and hard.?????????