question: Hello, wondered if you could help? I have had a total knee replacement from which I came out of hospital yesterday. Since the morning of Friday 1st July ( I went into hospital on 1st July) I have been unable to have any bowel movements. I have 2sachets of movicol, 3senna, 5doses of lactulose and still nothing. I tend to think ducalax always helps but wondered if it s safe to take with lactulose? Any suggestions as I m feeling sick and in pain, thanks for your help, XXXX