Neurological disorders, tiredness, and anxiety

For the past few years I have noticed that I have become unbalanced. I often trip, run into things even though I can see them in my path, and when Im walking or standing I usually lean to the side. My coordination has become worse over the years. I also feel like sometimes when people are talking to me, my brain isn't interpreting what they are saying. Sometimes I have to have them repeat very simple things so I can process what they are telling me. Lately I have been finding it very difficult to talk without mixing up my words, or not being able to say exactly what I want. I.E. I will draw a blank, not being able to fill in the correct words I need. Occasionally I will use words that are completely different than the words I intended to use. The other day in one of my classes, we did finger to nose testing and I missed several times which is apparently an indication of neuro disorder.

I would like an opinion on what is wrong with me and what I should do in the future.

Thank you!