Whats wrong with me? I keep doing the strangest and stupidest things without realising it?

Here's some examples. I went to the bath room, I was holding my bracelet and without thinking when I was finished in the bathroom I rolled up the bracelet in toilet tissue and flushed it. I don't even really remember doing it, just vaguely. Its like I blacked out for a second, I started looking for my bracelet and couldn't understand where I might have left it then slowly I started to remember sort of like a flash back. I keep doing things like this and I dont know why, what's scary is that what if im doing things that I dont remember doing especially in public. Its like I black out for a second and I dont know what im doing then after iv done something really silly I come out of it and think why the f did I do that? or what did I just do? Im only 22 so I dont understand why this is happening?