Frustration and Stress

So this morning I was supposed to meet up with a study group at Barnes and Noble around 9 a.m. I got there a little after nine and looked around the store to see if anyone had gotten there yet. I didn't see anyone so I headed upstairs and just started studying. I stayed for about an hour, getting up to look around the store twice to locate any errant study group members. I didn't see anyone, so I went home. I was so pissed, I hate being flaked on. When I get home there is a message on my machine. It is someone from the study group calling to ask where I am. I'm thinkin, "Where the hell were you?" She calls back a little while later and I find out that they were sitting over by the coffee place the whole time. So I'm a bit frustrated. I'm wondering why they didn't see me walk in when I got there, walk by when I was looking for them, or walk out when I left. I'm also wondering why noone got up to see if I had already come in and just didn't see them.

We have our first test tomorrow and I'm freaking out because I think it's gonna be harder than I originally expected based on the practice test and homework. This is supposed to be the easiest test of this course too. I don't know what I've gotten myself into. I will be VERY glad when this class is over and I can relax a bit.