Well the threat title just about says it all. The wife complains that after we do doggystyle her back hurts...and the pain doesn't usually kick in until after we're finished. sometimes doesn't even start until the next day, like a soreness. It's a dull pain in the lower back, and for the life of me I can't figure out what this is all about. Any ladies experience this or have an idea of what this could be from???