Over the past couple of weeks I've had to take on the workloads of four colleagues who went on annual leave at the same time, in addition to a colleague on mat leave - so in total I've taken on the work of five other people in addition to my own. Our work is client-facing and with tight deadlines. Some tasks that were meant to be quick box-ticking exercises became much more involved and were hard to deal with as I didn't have any documentation and wasn't cc'd into prior emails. I feel like a few of my colleague's handover documents were lacking in necessary detail, so I made a couple of mistakes because I didn't have full context. My manager now seems irritated with me and I'm also irritated for not even getting a thank you in return for all the pressure I've been under.
I'm also a bit upset that all of these holidays were approved without checking the calendar first to make sure we still had appropriate cover in the department. I've broken down crying several times over the stress of it all. Am I being unreasonable here? My DH thinks I need to raise it with my manager but as they approved the leave (and went on leave themselves) I can't imagine they will be sympathetic.