It is not clear whether you have been diagnosed to have mixed anxiety and depression. If not then symptoms you described may be due anxiety or tension headache
if you have heaviness of head or headache. If it is so find out the source such as work related stress, over burden of any kind etc. and manage accordingly such as time management, resource management etc. Also try relaxation technique, deep breathing exercise
etc. If you have a diagnosis you require active treatment from qualified psychiatrist
in form of medication with or without psychotherapy
Hope you will be fine soon.