(short term) memory loss

You know how you do some things so many times that it is easy to forget if you did it this time? For example, I take my vitamins as part of my bedtime routine. Some times I get to the end of my routine and think, "did I already take my vitamin? I can't remember!" And the sad part is, if I did take it, it was less than 5 minutes ago that I did it! Sad. And super irritating! Because then I don't dare take it just in case I already did! So what reminded me of this was tonight when I went down to put some clothes in the dryer. I use dryer sheets, and normally I throw one in before I put the clothes in...but not always. So every time before I start the dryer, I think, "did I already put one in?" I can't see it if I did...since it's under a pile of wet clothes...but i also can't remember back to two minutes earlier and whether or not I have done it. So because i am too lazy to dig under the clothes to find out, I just throw another one in, just in case I didn't do it. Static cling is worse than a wasted dryer sheet! And you wouldn't believe how many times I have found two dryer sheets in a basket of clean laundry. Why can I remember the address to the bus station after a whole month but I can't remember what I did 2 minutes ago? Brains are weird.