I'm Having Hallucinations...?

Tiredness can make you hallucinate but obviously you haven't been severely tired for a year so I would recommend seeing a doctor. Seeing things out of the corner of your eye is quite common, but seeing things in full view can be a symptom of psychosis which can lead to schizophrenia so as I said, I would see a doctor and tell them what you are experiencing. It doesn't mean that you are going to go to the nearest mental hospital, no, you'll just get the help you need. I'm surprised you aren't scared by these, when I was hearing voices I would get terrified at times! Hearing things, seeing things and feeling things are all symptoms of psychosis, I know that feeling things sounds a bit strange but you can hallucinate through all five senses. You can see things, hear things, feel things, taste things and smell things. All are hallucinations. But seeing things and hearing things are the most common ones and all hallucinations need to be checked out. So see your doctor and get some help. Hope this helps :)