Does depression make you forgetful? ?

I have suffered from depression for a few years (almost a decade). I find that I'm dumb and can't remember anything, not even for a few minutes, and have trouble learning new things at school. Is this typical of depression, or is something more serious wrong with me? I feel so dumb and am scared to take a job because I'll screw it up. I used to be such a smart girl, too.