Welcome to the Senior Health Forum. I am so sorry to hear about your situation. I also know how frustrating Chronic Pain can be and how it can disrupts your life.
I assume you have been to a Rheumatologist. If not please consult one. They may have answers for you.
Have you consulted a PMP (Pain Management Physician)? At the very least you deserve to have your pain controlled. PMPs are often able to offer treatments, procedures or medications other Physicians have not considered. I hope you'll request a referral.
Of course your insurance company wants you to return to work, asap. Sadly they are running a business and your claim is costing them money!! They are quick to take our premiums with a smile but not so quick to pay out when we need them.
Is there something on your hospital discharge report that makes a Physician think twice about treating you? Do you thin it is the cancer diagnosis?
What I've learned is to ask question.... ask just what you are asking here. We forget that Physicians are human also... and they are Service Providers not Gods! There are good ones, great ones and not so good ones, just as there are in any profession. So talk to your Physician like they are your next door neighbor. Remember you pay for their Service.
You may also benefit from consulting a Pain Management Therapist. I know many Chronic Pain patients that have been helped by a good Therapist. No, you are not crazy but you have much on your shoulders.
You may find this article about ppl with Chronic Pain helpful. Here's the link:
It sounds to me as if you need a supportive and informed Physician that knows about Chronic Pain, a disease in itself. That's one of the reason I suggest a PMP.
Don't stop searching. Be assertive and insist on answers.
We also have a Forum that deal with Chronic Pain, it the Pain Management Forum. I hope you'll stop by. Please let us know how you are doing.