Your have really explained your problem very well and I appreciate it. The current symptom profile is suggestive of mild Generalized anxiety disorder
in you. You are always on a tight side, and seem to worry a lot and remain preoccupied with your somatic symptoms. you seem to have an irritable bowl which is common with generalized anxiety, hence your bowl habits tend to be moody. The wet dreams followed by pimples on nose are unexplainable and I recommend you to consult a dermatologist
if the swelling persists and becomes troublesome. Do not worry as there seem to be no symptoms of depression
or OCD currently. You may benefit from a course of Low dose anxiolytic agent ( say a Low dose SSRI with pregabalin
) along with daily practice of Meditation
/ Muscle relaxation exercises. You may need some initial training in learning formal procedure and may consult expert for it or there is enough genuine material on net to learn meditation techniques / relaxation exercises.