Suggest Treatment For Itching And Swelling In Vaginal Area

I had a very long practice yesterday and I wore spandex and shorts. I sweated a lot and right afterwards I used the restroom and felt some irritation after I used the restroom. I showered after I got home. That night I felt discomfort, itching, and swelling in the outer vaginal area. What could this be? I put vaseline around the area, and a little while later i put this hydrocortisone byturate cream there as well. The itching is more bearable, but it still bothers me. What can i do?