I think I already know the answer to this but it helps to set it out anyway.
I'm s secondary teacher with 10 yrs experience working FT in a shortage subject. HoD is v inexperienced and SLT not terribly on the ball about training this person up. As a result, it falls to me as the member of the dept with most experience to remind, prompt or teach HoD about what needs to be done, how to do data, logistical arrangements for mock exams etc. I'm feeling the strain and very resentful that I'm effectively doing this person's job for free and yet they get the TLR and extra PPAs. Have tried to stand back from this and yet everything descended into chaos.
Add to this I have an hrs commute each way each day, 4 kids (youngest is 2), DH works away most weeks and I'm fucking shattered. I've also had a pretty traumatic medical experience recently which has thrown me off kilt somewhat.
My own planning and marking disappeared weeks ago. Im going into lessons utterly unprepared and it's beginning to show in terms of student behaviour and progress made. I'm not sleeping well and barely eating. I'm constantly on the move. I spend more time commuting each day than I spend with my own children. Sometimes I'm in bed before them so they have to put themselves to bed. This is not ideal at all, esp when DH is away too.
I have been very open with school about my situation and they have been pretty understanding and plans are in place to let me go PT shortly.
In the meantime however my youngest isn't sleeping too well and wakes every couple of hours. I just about manage until I wake finally at 2.30 each morning worrying about whether I can cope with the day ahead. When it's clear I can't, I decide I'll have to take the day off. I then lie awake worrying about cover work and worrying about leaving classes to it and worrying about whether school and students see me as a cop out or a malingerer. I then worry about not sleeping and tell myself I need time to rest and that currently, students are better off with mediocre cover work than with an utterly knackered and unprepared subject teacher. I tell myself too that if I'm in then I'll have to mark their books sometime.
I know I've reached burn out. I've seen the GP and they're fully supportive. I know I need to be at home resting and putting my ducks in a row and getting better and mentally stronger. So why do I feel so flipping guilty calling in sick?