You have experienced a great level of difficulty ,stress and suffering in your life and that could certainly affect you emotionally and physically . In your case , what you should do is consult a doctor , preferably an Internal Medicine Specialist first . The first step would be to determine if what you have been feeling is caused by an organic condition including :
1- A heart condition like inadequate heart blood flow ( associated to the presence of clots or cholesterol ) , heart disease or the presence of an irregular heart electrical activity . This to evaluate the chest heavy feeling ,fatigue and tiredness.
2-Brain masses ( blurred vision, confusion and memory problems )
3- Irregular electrolyte blood levels( confusion and memory problems )
4-Neurological disease ( forgetting things , blurred vision and headaches )
5-Irregular glucose blood levels ( blurred vision by retinal damage , headaches and fatigue or tiredness)
6- Abnormal or irregular thyroid blood levels ( fatigue )
7-The sharp pain at the back of your head could be attributed to different problems , some of them benign , like migraines , cluster or tension headaches and some of them more serious like brain blood flow obstruction , increased brain fluid , enlarged brain blood vessels, arteriovenous malformation , brain blood vessel inflammation or high blood pressure .
8-Medication side effects
9- Inadequate nutrition specially low B 12 vitamin levels ( confusion , nerve damage ,blurred vision and fatigue )
10- High blood pressure ( headaches )
11- Optic Nerve Inflammation( blurred vision)
12- Glaucoma ( increased internal eye pressure ) ( blurred vision )
Your doctor will need to perform several tests including : a chest X-rays , ECG , heart enzyme blood levels, head CT Scan or MRI , vitamin B12 levels , nerve conduction tests , glucose blood levels , thyroid blood levels , a neurological examination and a complete physical examination ( including your eyes , your heart and your lungs) .
With these tests , your doctor will determine if any of these conditions is producing your symptoms so you can receive an appropriate treatment .
If this is not physical and all the tests are completely normal, your doctor will need to refer you to a psychologist or psychiatrist to determine if all these symptoms are caused by an emotional or psychological condition like depression , stress or anxiety . In the somatization process , you body interprets the sadness , depression , anxiety you are feeling and converts them into physical symptoms . In that case , they will treat you with psychotherapy sessions to determine what deep emotional issue could be affecting you to this point so you can manage those issues in a proper way so they do not affect your entire life .
If the symptoms persist after receiving psychotherapy , your doctor will prescribe you anxiolytic or antidepressant medications to control your symptoms combined with psychotherapy sessions.