Mental suffer

I just suffered bipolar for so long and I had been in depression for a long time. Today I feel very mentally uncomfortable but I don’t know how to describe to my doctor. I feel there is a great pressure on my mentality and my mind is full of misery, hopelessness, despair and sadness that I had accumulated as I went through life. I have cognitive problems too , but I don’t know what it is and describe to my doctor. Does anyone know about somehow about cognition and neuroscience? My neurologist appointment is at the end of Dec. I don’t think I can stand that long. What I should do for the time?

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