Hi all. I had a SIBO test on Friday and took some lactulose as part of the test. Friday I was fine just a bit of gas after. Saturday I had quite a bit of stomach pain but Sunday I felt terrible with a bloated stomach and lower back pain. Today I can't get out of bed and the pain in my back is worse and I am so bloated I look pregnant. Surely it can't be the lactulose can it? I can't think of anything else to have caused this!