Wondering should I tell them at my f2f interview

Just wondering I already mentioned Omg I'm having my dreaded f2f interview on Tuesday but since sending my forms off to the pip assessment team I have seen my neurologist since and also been referred back to a physiotherapist who then referred me to the pain clinic who are trying to get my pain under control as they told me they'll tweet some of my meds if needed , do you think I should mention this or not , and is this common practice that when you send a constultant neurologist letter in stating you problem and impact and also a letter from the psychiatrist also stating I suffer servere recurring depression with anixiety and also a letter from my doctor they still want to see me , do these people know how sick we are let alone make us go through these interviews.
All I can remember from my last interview was the lady said I was ok lol unreal she knew more than 3 specialists so you wonder why people have panic attacks when the word interview pops up again

HI lilliecat,

There is certainly no harm in mentioning that you have been referred to the Pain Clinic.