Things are forever changing with my schedule

Due to the librarian shortages in the library system in which I work, I did not train the new manager this past Saturday. Instead, I was sent to cover for a branch manager who stated on Friday, that she would be too sick to work on Saturday. There was a program and two scheduled community meetings at her branch that day. I was supposed to train the new manager again tomorrow, but that's a scheduled vacation day for me. What does this mean? I'm not scheduled to report to a location this Wednesday. I have to call my district manager tomorrow, to find out where they've decided to place me. Change is good, and promotions are better, but sometimes I think that I would have been better off in my old position. This constant schedule/location change is for the birds.