yeah man none of us are doctors. If I were you I would get myself a medical appointment ASAP and be completely honest about your drug use. If things get worse then go to the ER. this could potentinally be very serious, and life threatening.
i would recommend you abstain from all drugs from now on, or at least until you find out you haven't done some serious damage.
You can't look at this like this is an isolated incident due to just your dose of codeine and DXM now. Judging by your posts you have used various drugs heavily and regularly, and all of this has an impact on your body. You pissing blood might just be the first sign that you really need to stop what your doing and realise that you may be causing serious and permanent damage to yourself.
Sorry if this is harsh and causes you anxiety, but I feel you probably need to hear it. Go see a good doctor ASAP.