This was a couple of minutes after standing, walking about five slow steps and sitting back down again.

To answer @bendywarrior ’s questions, it is much lower when I’m laid down (between 70 and 90) but this is normal for me if I’m standing or sitting down. It does slow slightly if I go from standing to sitting sometimes too.

I don’t remember if I’ve already mentioned this but I’ve had an abnormally high resting heart rate since leaving the hospital at the beginning of April. (And by high, I mean consistently higher than 110bpm).
I have since spoken to my GP and had a blood test to check my potassium levels, which came back fine, as well as an ECG. The ECG showed a regular but high heart rate of around 90-100 so they’ve referred me to the hospital out-patient cardio clinic to have another type of ECG (the proper name of which escapes me) where they put goop on your chest and use a scanner to watch your heart beating. Fingers crossed they’ll figure out what’s causing it. I’m still on prednisolone, which I know can cause a rise in heart rate, but it’s never been this high before. I’m hoping it’s nothing serious. Someone from IBDSuperheroes has suggested it could be the beginnings of POTS so I’ll talk to the doctor when I go for the ECG.