So, it's probably been a few weeks, at least from what I can remember, the beginning if August. So I've come to realize that at the side of my eye, there is this black dot that seems to follow my eye whenever I shift my sight to somewhere else. 

When I first saw this black dot, I originthey thought, Oh, there's a bug on my wall (as it is small, and at the side of my eye), but when I shifted my vision to the wall, I was staring at nothing but white.

Sometimes, this dot multiplies and so there are two or three dots all clumped together in a little triangle or something. This dot also tends to disappear for a short amount of time, before bothering me again.

These dots only appear in my left eye. Is something wrong with my vision? I've heard they are called "Floaters", but I can't help but worry. It may be nothing, and something normal, but if anyone knows, can someone tell me the reason as to why these dots appear?