Explore your excellent support group:
Multimedia File Viewing and Clickable Links are available for Registered Members only!! You need to

or

=====
After such a long hospitalization were you discharged with a treatment plan?, with meds to abort the attacks and other med to reduce frequency/severity of attacks?
If not, why not? Were you given any instructions re. self-care, future contact with you docs?
=====
Yes, the first contact with Cluster is scary and shocking. There are several thousand members of this group who will bear witness to the reality that there is much good help, both medical and support to be had.
It's tempting to throw a lot of medical material at you re. Cluster but, at this stage, I expect it would add to the confusion.
First, get back with answers to my questions so that we have some idea of what has been planned for you. Start reading the material on the buttons (left) starting with the OUCH site; read the messages here. This is by way of getting some basic grounding in what is happending to you.
One basic article and a couple of good sites to explore for more basic information:
Cluster headache.
From: Multimedia File Viewing and Clickable Links are available for Registered Members only!! You need to

or

(Orphanet Journal of Rare Diseases)
[Easy to read; one of the better overview articles I've seen. Suggest printing the full length article--link, line above--if you are serious about keeping a good medical library on the subject.]
Leroux E, Ducros A.
ABSTRACT: Cluster headache (CH) is a primary headache disease characterized by recurrent short-lasting attacks (15 to 180 minutes) of excruciating unilateral periorbital pain accompanied by ipsilateral autonomic signs (lacrimation, nasal congestion, ptosis, miosis, lid edema, redness of the eye). It affects young adults, predominantly males. Prevalence is estimated at 0.5-1.0/1,000. CH has a circannual and circadian periodicity, attacks being clustered (hence the name) in bouts that can occur during specific months of the year. ALCOHOL IS THE ONLY DIETARY TRIGGER OF CH, STRONG ODORS (MAINLY SOLVENTS AND CIGARETTE SMOKE) AND NAPPING MAY ALSO TRIGGER CH ATTACKS. During bouts, attacks may happen at precise hours, especially during the night. During the attacks, patients tend to be restless. CH may be episodic or chronic, depending on the presence of remission periods. CH IS ASSOCIATED WITH TRIGEMINOVASCULAR ACTIVATION AND NEUROENDOCRINE AND VEGETATIVE DISTURBANCES, HOWEVER, THE PRECISE CAUSATIVE MECHANISMS REMAIN UNKNOWN. Involvement of the hypothalamus (a structure regulating endocrine function and sleep-wake rhythms) has been confirmed, explaining, at least in part, the cyclic aspects of CH. The disease is familial in about 10% of cases. Genetic factors play a role in CH susceptibility, and a causative role has been suggested for the hypocretin receptor gene. Diagnosis is clinical. Differential diagnoses include other primary headache diseases such as migraine, paroxysmal hemicrania and SUNCT syndrome. At present, there is no curative treatment. There are efficient treatments to shorten the painful attacks (acute treatments) and to reduce the number of daily attacks (prophylactic treatments). Acute treatment is based on subcutaneous administration of sumatriptan and high-flow oxygen. Verapamil, lithium, methysergide, prednisone, greater occipital nerve blocks and topiramate may be used for prophylaxis. In refractory cases, deep-brain stimulation of the hypothalamus and greater occipital nerve stimulators have been tried in experimental settings.THE DISEASE COURSE OVER A LIFETIME IS UNPREDICTABLE. Some patients have only one period of attacks, while in others the disease evolves from episodic to chronic form.
PMID: 18651939 [PubMed]
=====
A new (for me) site which is worth your attention: medical literature, films, plus the expected information
about CH.
Multimedia File Viewing and Clickable Links are available for Registered Members only!! You need to

or

======
Multimedia File Viewing and Clickable Links are available for Registered Members only!! You need to

or

Search under "cluster headache"
======
======
The immediate MEDICAL goal is to beat on your doc to get relief from the pain/attacks. Until some control is established it's going to be a strain to get focused on the long term learning that will follow.