Doctors don't understand how difficult it is for me to see them.

I understand the difficulty @YourSparklyLimeTraybake

People don't understand that the school can't legally be open without a head/deputy/acting head. And you cannot send 100s of children home because you need a GP appointment.

How heavy is your teaching schedule? Would you be able to block out a morning to do a phone appointment? Check if the school subscribes to any wellbeing service, most do (but no-one uses them). They sometimes have a GP service. Register with Livy or one of these online GPS that can do a Saturday. For the blood test, some walk in blood test centers start at 7am. Could someone open the school and you'd be in before the children, just not first in. Or book now for the first appointment possible in the Christmas holidays.

Don't know if any of those would work, but some ideas if you haven't already tried them.

I’m not sure what you are expecting anyone to say? If the drug is licensed on the basis of blood tests then they are not going to prescribe it without one (no matter how busy you are). If you need the medication you will have to make time for the test. That’s life. As other people have said - if you were incapacitated, they would cope without you so don’t worry about that.

However much work you have to do and however challenging your school is, it will not fall apart from you not being there for an hour. What do you think would happen if you had to go to hospital for some reason? The other staff would cope.

You've cancelled 3 appointments?! I'd be interested to know why your job is more important than the time of the NHS staff.

I agree

'Something has happened' sounds like OP has cancelled 3 times?

If that is the case then the GP have made themselves available to you for 6 appointments and you have cancelled or not shown up each time?

This is very much a you problem if so, and you are choosing the wrong priorities, maybe for the right kind reasons but you need to rethink.

If you’ve run out of medication you need, can you contact 111 and ask for a referral to an out-of-hours GP who provides non-registered appointments, or for bloodwork at an urgent treatment centre? My local hospital has a walk-in bloods clinic at certain times: you still have to make yourself available and go and wait. Your work is obviously a challenge here, but if you’ve made and needed to cancel several appointments, your GP can’t really help with that.

If your role is so vital (spoiler it isn’t, if you can’t do it the LEA or academy will bring in SLT from another school) then it’s even more important you prioritise your health.

Make time to make the phone call, and then go a blood test is what 3 minutes at best? 10 minute appointment? Can’t you nip out to the doctors and go back afterwards? Prioritise yourself because your job wont.

You just need to book and go, others are taking time off for illness and so can you, the school will not fall down in a couple of hours, so go get your blood test. If you dropped dead tomorrow it would keep running.

With the greatest respect, you just need to book it and go. The schools staffing issue isn't your problem. This isn't the same as you doing your own job and inconveniencing your manager by booking them in work time, this is the fact your health is being impacted because you're doing your job, your superiors job, and holding it together for everyone else. At some point you have to say enough is enough, it's too much for one person and you're taking time off for a blood test.

First post nails it. The GP can’t fit around you (especially if you’re working 7-7). You can’t keep missing appointments and then getting annoyed you have no medication. Prioritise your health.

I've tried to arrange both three times, and each time something has happened so I can't go

That doesn't sound like the doctor's fault and they can't prescribe you medication that might be damaging you. As a pp said, you need to make time.

If you need a medical appointment - you go at the time of the appointment. No one is indispensable at work. The place will not collapse if you aren’t there for a few hours. If you get ill, the school will still operate in your absence.

Your school can cope without you, they would have to if you were hit by a bus on the way to work. It's easy to feel this sort of pressure when you in a role like yours but it is self inflicted. The school can manage without you for the time it takes you to go for a bloodtest. This sort of behaviour is what leads to burn out.

If you got run over by a bus tomorrow they'd manage without you. I used to be like you then ended up off sick and everything still got done. Maybe you'll have to take a day to get sorted. You are the priority not work.

You make time. Simple as that. While I appreciate you’re busy ultimately your health comes first. You’re choosing to put your job before it