Me and my gf have sex regularly, and although I have had multiple gf's this problem has always happened. Maybe you can answer it. Every time I have an orgasm inside my gf or when she is giving me oral and I want to try going longer and I keep pumping myself inside her I end up in pain when I do so. I dont want to stop but it hurts too much for at least 10 minutes later. After that I'm fine and it doesn't happen again after orgasm, but just that first time it does. Do you have any answers?