Sorry this all happened to you? Does Far Cry 5 have lots of flashing lights? I ask because I've seen warnings how this can affect you neurologically. Inner ear issues are also well known for vertigo and vertigo can cause nausea along with the dizziness.
Anyway, good news is that upon examination including ct scan and blood work, things appear normal. When you say digestive problems, what are you referring to? Not wanting to eat and weakness? Or like bathroom problems, stomach cramping, etc.?
Anxiety definitely can manifest into physical symptoms. Depending on what is going on with the stomach issues/digestive issues . . . I'd make sure you have nothing going on with that ---- and otherwise, what about talking to your doctor about treatment for anxiety?
I actually DID get vertigo from inner ear dysfunction. was very ill. After, I had anxiety when I felt my ear get that same kind of fullness that preceded the episode and I can become very anxious. Having a terrible episode can cause anxiety. But after 4 months, you really need to go to the next level of treating the anxiety if it has continued like that.