A few days ago I had vigorus sexual intercourse with my longtime boyfriend multiple times in a short period of time. I noticed some pain and inflammation during but I just brushed it off as normal from the amount of friction during sex. After we finished, I noticed my vaginal area was very red and swollen and painful. The next day I noticed slight itching. Today, when I went to wipe after using the restroom I noticed what looked like tiny pieces of dried toilet paper so I wet a towel to clean it off and when I wiped I noticed it was the skin on my vagina and it was just peeling off. What is this?? And why is it happening??