Mucus or discharge?

Does anyone get this? I feel like it comes out when I urinate but I'm not sure. Its white/off white and sticky. It kind of seems different then cycle discharge. I'm concerned because Google said kidney stones. I'm currently on antibiotics for a uti even tho I tested negative for it because I had the symptoms but it started before the meds. I'm not sure when tho. It just happens that I look into my pee and see this discharge/ mucus in it. What could it be? Does anyone else get it? Has anyone had it? Is it normal or do I need to do back to the doctor?