Hi A-Z..welcome!
THMY is spot on...does sound like shadows...and there are all kinds of gradations... from annoyance to just below major hit level. Personally, I could deal with most levels below major hit and proceed with normal life if I knew, from experience, it wasn't going to proceed higher. Naproxen, energy drink, even aspirin sometimes worked for these....oddly OXYGEN, which I swear by, did not. I am unfamiliar/puzzled with Diclofenac Sodium / Misoprostol (even after googling)....but the Rizatriptan is kinda perfect....way too low and slow for a major hit but ideal for a shadow as long as you don't exceed dosage limits.
More than a few folks have reported instances of CH without pain...another form where you get some or all of the symptoms....except without pain! It would be a strange sensation which I have not experienced....
I have battled depression most of my CH career...mostly in the past now....but always in between cluster episodes (was episodic for years). Seemed during cycle I was too busy dealing with it to get depressed. OUT of cycle there's lots of time to reflect and dread and anticipate "what's coming"....which is why>>>
Do you have a headache specialist Doc? VERY important as most PCP's and even neuros have limited experience and knowledge of CH and other headache conditions. All things proceed from a diagnosis...have you been?...with what? Bear in mind, multiple headache types are completely possible.
Are you familiar with Oxygen treatment? Saved my sanity if not my life! Have you considered the D3 regimen? Any prevent meds like verapamil? Abortives like Sumatriptan injections and Zomig nasal spray?
Have heard of beef being a trigger for some...tho it is unusual. If you are in an area....or have travelled to where ticks are.... you should be checked for Lyme disease as it can create an allergy to red meat.
Best
Jon