I can appreciate your concern.
All these systems are controlled by what is called the "Autonomic Nervous System'.
The autonomic nervous system has two parts, the parasympathetic - the 'relaxing' pathway, and the sympathetic - the 'excitory' pathway.
All the urges, like urination, defecation, etc are controlled by the autonomic nervous system through a complex interplay between this inhibitory and excitory signals to the end organs like bladder and rectum.
The controlling system in the brain is diverse, with each urge having its own center, like the micturition center and defecation center, etc in the brain. These centers are in turn controlled by a large number of interconnections to various other parts of the brain.
Autonomic nervous system disorder can be the cause of your symptoms. This is the most likely in view of your multiple symptoms.
Dysautonomia can cause disorder in heart rate, breathing, urination, defecation, coughing, etc.
Look up these two articles on dysautonomia carefully. I think you will find that your symptoms match quite closely.http://www.medicalnewstoday.com/releases/76785.phphttp://en.wikipedia.org/wiki/Dysautonomia
Consult your doctor and discuss about dysautonomia.
Hope that satisfies your query. If so, please choose a positive rating.
If you have any other queries, do ask. Wish you good health and a quick recovery. Bonus is always welcome!
Dr. P. Jyoti