This is hard for me to explain. Its probably not the 'anal wall'. However, after having sex twice a day over the weekend and up until today with my girlfriend, she got sore. Last night I asked her to tell me where and she kept saying 'lower', 'lower' and I thought it was going to end up at her arse. However, she stopped at the bit of skin/membrane/??? that I suppose separates the vag' from the ass. She said it was sore the first time we had sex last week and wasn't in the interim but that it was these past few days. Here are my questions: 1. Is this just soreness from being stretched and will it pass in time? 2. Could it be a tear and might it need medical attention? 3. Something else/Anyone had this before? She says she'll just leave it but if its a tear or something I think she should see a doctor.