Do We Dream Our Fears?

Woke up this morning with a headache so I got up and took some pain pills and went back to bed. Had the strangest dream ever. Was at work and couldn't actually seem to do my job. Tried to ring customers out and the computer was working correctly and then I couldn't see or figure out which buttons to push. Was taking me forever to do the smallest thing.  The feeling of anxiousness in the dream was just overwhelming. There were other parts in the dream that were even stranger but not meant for public reading. I guess I should have just gotten up and taken the pain pill without going back to bed. It is only ibuprofen but it seems to do that to me every time.