Tribunal next Friday. Should I mention to tribunal that I've got an appointment to see a specialist?

Good morning everyone, I need some advice again, so next Friday I have my tribunal by telephone, and I've started to write down everything where I think the discriptors were wrong,in what would happen if I tried to do this or try to do that, the way I was feeling, the medication I'm on,the fact that I haven't left the house due to depression and anxiety, this has been going on for months, even before I had my assessment,I've only left the house due to medical appointments, which was a bloody scruggle, due to the pain level that I was in and still am in, and afrer waiting months, like 9 months, because of covid, which I now have, I've finally got an appointment to see a specialist as want to investigate, do bloods mri, literally prod me about to see what's going on, do I mention this to the tribunal, as the assessor states that I had no evidence of having an specialist input, even though I told them I was waiting for an appointment.