Just realised I have anxiety
The worst thing is not knowing what I'm anxious about. I'll be sat at work and will feel a panic attack coming on from nowhere. My hands shake and I can't breathe. It's at the point I'm neglecting myself, I've lost over a stone in a month just by not eating well. I just feel lost and overwhelmed.
Oh no!
It sounds like a lot is going on, however I'm proud of you for sticking through because you're worth it
Eating healthy and a right amount of meals (3, normal size, or 6, snack-sized) can definitely help! Have you tried that before? 
Oh no!
It sounds like a lot is going on, however I'm proud of you for sticking through because you're worth it
Eating healthy and a right amount of meals (3, normal size, or 6, snack-sized) can definitely help! Have you tried that before? 
Maybe you are under a lot of pressure. Maybe you haven't sleep well or eaten or all of it combined.
I had the same problem of not knowing what caused it until I discovered that it was because I started to feel anemically bad and that triggered a fear to faint in my mind which ended in panic attacks and general anxiety over every little physical change I felt, even if it was only a headache.
try to remember and dig into the source. I know it's really hard but you must do it to start taking action.
I am sorry that you are going through this.