Steve Tyler

So I was diagnosed with depression about a year and a half ago but only took medication for a few months because I thought I was better(I know, dumb decision). Ever since I stopped taking the medication I've still had a lingering depression that has seemed to come and go every few weeks to a month. I was never diagnosed with OCD but I think I probably have it. Ever since I can remember I've always had this habit of counting things and a few times I have had these overwhelming urges that I could barely control. The most notable time was when I was buying an item at a store and I almost couldn't control my urge to kick the salesman in the nuts.(Not making this up) He hadn't done anything to me to make me want to do this either. But more recently, I've been experiencing extreme depression and anxiety. I keep obsessing over the thought that my mother is going to die. She's in no immediate danger that I know of, yet I just can't get these thoughts out of my head. Also, I've been noticing that I sometimes think something moving in my peripherals but when I look, there is nothing there. It almost seems to be a little black dot moving through my field of vision. What is wrong with me?