So, I just experienced something new and wanted to see if you guys could give me some insight here. I was at my girlfriends house tonight and one thing led to another (like normal), and before we knew it, we were having sex on her couch. This is the first time we have had sex on her couch (which is leather). We did the usual variety of positions, ending with doggy style bent over the arm of the couch. I lasted a little longer than normal tonight (maybe due to the bottle of wine). When we were done, we went and took a short shower together. When she got out, she noticed that her outer labia was very "swollen". It hurt to walk and she said it felt like it was going to burst from too much pressure. She had never experienced this before, and I have never been with someone that experienced this. What do you think could have caused this? Irritation? Wrong angle? Leather couch? She said she is about to start her period in the next day or two...could that have something to do with it? She felt nothing abnormal during sex. Thanks in advance.