So I had intercourse about 4 days ago, and afterwards I felt sore, thinking it was just from the sex; but the next day there was discomfort and dryness. I was told that it might be vaginal dryness from no forplay, so I went and bought lubrication this morning and throughout the day I was fine, but now when I apply it again, it burns. So I went to take a look at myself and it appears that I have welps right inside the opening of my vagina and I also have some redness there, and on the tip of my clitoral hood. I don't know if it's a yeast infection or what but I am very scared, nervous and don't know what to do anymore.