Thank you so much for your reply.
Unfortunately I don’t know for certain what triggered my POTS, at the time I was working a lot of busy hours on my feet and was under a lot of stress so have just put it down to that. I haven’t had any head or neck injury’s.
I haven’t really noticed anything that brings on my headaches, I have them nearly all the time, there’s a constant slight pain/ache. But most days it is very bad, I get all sorts of headaches, sometimes it feels like my whole head is in a vice, sometimes behind my eyes and forehead, sometimes the base of my head and neck, sometimes both of those together. It often feels like I have a hat on. Nope, I’m not hypermobile. Only sometimes by laying down it helps with the headaches, not always though.
I have had a brain MRI but that was when I first become unwell, before the headaches started.