hii dear u have many somatic complains which is part of somatization which means all symptoms are medically unexplaines all test are normal but u have genuine complain somatization is the part of stress related psychological changes but u need to identify cause or stress of origin tab escitalopram 10 mg in morning also helpful life style modification is must daily scheduling exercise meditations proper sleep proper diet etc no need to worry if needed than consult psychiatrist he will guide u further and psychotherapy and counseling are vary helpful in such cases get well soon