Left Arm Pain

First time posting here, like many I probably wish I didn't have to but hello all the same!

I've had fibromyalgia now for 5 years, diagnosed anyway but probably for alot longer. I also suffer from really bad anxiety, and major health anxiety surrounding my heart. Mainly thinking I'm going to have a heart attack. I'm 32.

I have extreme left arm pain, I've had it for well over a year now. I've been to a&e multiple times and had ecgs and a 24 hour heart tape. They always seem to blame it on my fibro or anxiety despite the pain always being the left arm.

I'm currently laying in the bath sobbing because the arm pain is so bad. It feels like it's being crushed in a vice. I often think this time this is it and really start panicking but I'm trying to tell myself it's normal. I would however honestly chop my arm off if I could.

I guess the purpose of this is to see if anyone else suffers from really bad left arm pain? I wish I could just blame it on fibro and that be enough to justify it but right now, it's not. I don't want to spend another night in a&e and waste vital resources.

I'm just so fed up. I could take any other pain over this.