Hi Msdolphin
I feel for you so very much as you experience multiple challenges all at once, such as the stress and fallout from work, the physical pain, doctors/specialists who aren't managing in the way of communication and constructive action, past mental health challenges and a variety of triggers beyond these factors. If you're not feeling thoroughly exhausted at this point I'd be surprised. You definitely deserve better than what you're getting.
As for the doctor who says it's all in your head, I'd be challenging him to elaborate beyond what, for him, sounds like an easy out which lets him off the hook regarding further investigation. Considering what's in our head, our brain is basically the master computer of our body, to some degree. It computes what chemistry needs to be released throughout our body, it reads the tension levels in our muscles, it regulates our heartbeat and lung function, it translates our thoughts in a variety of ways, it sits atop of the super communication highway known as our spinal chord, it is responsible for reading pain (leading to repair and inflammation) and the list goes on. So, to say 'It's all in your head', I'd be asking what part of my head/brain. Dude, elaborate! Don't be so slack.' He learned about all that stuff at uni, so he should know better when it comes to how the brain and body work together and what can lead to dis-ease/disease and dysfunction. For a start, he should know that stress can ramp up pain/inflammation levels.
Then there's you, the gradually developing expert on your own body. If those around you were smart, they'd listen to all the pieces of the puzzle you offer them. They wouldn't lead you to doubt yourself and the fact you can hear what your body's telling you: Stress leads you to greater physical pain. Natural therapies provide you with some mental and physical relief (such as feeling your mind and body in a state of peace while they're in nature). Dealing with incompetent people leads you to feel sick to your stomach (literally). A lack of constructive guidance and inspiration is depressing.
Perhaps you're onto something, wondering more about natural therapies. Would a holistic type of therapy cover the whole of what you're looking for, in the way of addressing what you're needing for you mind and body to work through and beyond dis-ease/upset? Would that give you a greater more soulful and energetic connection to life, where the inner dialogue begins to change for the better?