Confusion in mind, difficulty thinking.

I have confusion, i get confused easily, can't think or concentrate. I get confused in public places which are new and mind stops functioning like its blocked from outside. I also can't receive any information when i read anything or someone is explaining me something. I have severe short term memory problems. I forget everything within minutes like the place from which i arrived, i forget its name. I Forget people's names, shop names etc which i visited. I find it difficult to understand what others are saying. My reflexes become very slow. Its like my mind has stopped functioning. So, it gives me a feeling of confusion and brain fog. I don't know what to do and what this problem is. It is persistent and never improves. So, my work and social life is affected. Please help.