Something Dark Has Made Itself Known

Alright, I should start off with saying I am very new to all of this. I am trying as hard as I can to learn as much as I can as fast as I can, although I can't seem to find help or any decent websites. That being said, I hope this website is as legitimate as it seems.

I went through a lot this past year, and this summer started off so awful for me. I was in a really dark place, although I am not sure if that could affect my ability to see things in any way. I have previously had experiences hearing or feelings things, a growl here or a gentle voice comforting me there. The occasional tap on the head to wake me up. But this summer I started a night job, I would walk home after work around 3 or 4am. The first night I took the back road, it's sort of in the woods. There was no lighting but the stars, so I didn't see much but I could sense something watching me. I couldn't tell if it was friendly or not, but I didn't feel comfortable enough to find out. The second time I walked home I took the main road. This thing, again, followed me. This time, though, I could hear its footsteps. Well, not footsteps. I could hear things breaking like twigs or leaves, which was odd considering I was on the road and it was June in Northern Michigan. But I kept walking. As I got passed the spot I thought was the worst I heard a growl on my left. I ignored it, as I am used to growls. So this thing screams in my right ear. Just this high pitched, loud as possible scream. Of course I jumped and turned around expecting a cat or something. Instead, I made "eye contact" with some sort of dark... Being. It had a boxy head, with empty eye sockets (or maybe the eyes as a whole were just so black), and its mouth was gaping wide open. It had no teeth or anything, but I didn't get a good feeling from this thing. I stayed quiet, turned around and walked home faster. Now, like I said before, I am new to this and haven't actually seen things before unless out of the corners of my eyes. I have absolutely no idea what that thing was and I've been trying to do research. I keep coming up with nothing. I haven't walked home since that night, I wait until I can hitch a ride. But even if I don't run into this thing ever again, I have this incredible desire to figure out what it could have been.