Oh, well, that's not good. I've heard of a forgotten tampon but never a lost bandaid. I am a victim of a forgotten tampon and it was not pretty by the time I found it. Do you still have the odor with the discharge? Any pain, fever? I think it would be a good idea to get checked. You may have BV or some other type of infection. My issues once the tampon was removed went away a few days later-- if your symptoms are persisting, see a doctor to get checked out.