yellow butt pee

does anyone know why the butt pee is so yellow? Is it the toxins or previous vitamins I have in my system? I too have not had one solid bm and am on day 3. I'm a little worried and am anxious to get the mucoid plaque out. I am doing the salt water flushes but the only stuff to come out is bright yellow liquid. Just wondering why it's so yellow and if this is normal! THanks Tweet