Thanks so much to all of your for your responses. I'd love to take some more epsom's today - but I have a meeting this afternoon.
This morningI took about 600 mg of Magnesium Malate made from/with malic acid, ate some dried apples (and drank lots of water), and took an extra dose of Mag O7/OxyPowder - none of which have had any effect on the pain nor on helping me to further evacuate my bowels. But it'll work out. The pain was present all last evening and again this morning as soon as I was out of bed for a few minutes.