Ren I have put a couple of posts in with the BH as well. Dr said yesterday that its ok, but because I said I have been having heaps he is checking my cervix has not been affected when I go for my scan next week to check Bumps kidneys. But I haven't really had the period type pain as you described. I get a dull ache and then moments later I pass wind and the ache is gone so I am putting that down to wind. The thing is there is not a lot of room in there now and wind can get trapped anywhere and worse still take a while to work its way out, so may be that could also be the cause for you...