I'm In Tramadole And I Have Constipation, My Question Is

I'm in tramadole and I have constipation, my question is I'm afraid to tell her for fear she'll stop my medication. I need this pain pill for my pain but this constipation is giving me more pain in my lower back. Should I tell her. I don't what
Know what to do. I can take miralax but udk is that's safe to use every day