Help! "farm wife" social security disability

Does anybody have any ideas or experience with the below?

I have stage 4 cancer. I'm told I totally qualify for SSDI even fast tracked in terms of the medical records and that part. Here's the catch, after working all my life, after working salaried for decades, I'm now told that the 6 whatever years I worked fulltime not on salary means I get nothing.

In other words, if you work ful time, get paid, report the income - we DID report it - but were not on salary paying into diability, you get nothing (one guy told me informally this is called the farmer's wife dilemma because so many of them just pur their earnings into the farm and even if incorporated don't pay themselves a salary).

I can't be the first entrepreneur (or whatever word, idiot?) that can't get disability because all earnings were reported as the business!

Does ANYBODY have ideas/experience?

I am despairing.

I've spoken to a zillion social workers, SS attorneys, local support groups, nobody knows jack.

How is this possible?

How is it possible to work way over 40 hours a week for years, report all the income and then when sick disabled and dying not qualify for disability?

Anybody?

If you worked for decades, and were not paying into SS for only six of those years, you should qualify for benefits based on the other years when you were. 

All SS benefits are based on paying into the system for a minimum (sorry I don't know how many) number of years.  Once you are past that minimum, additional years will just increase your benefit.  Other types of employment, off the SS roles, while they don't count, should not affect any payments.

You also can qualify based on a spouse's SS eligibility, if he is now eligible to collect (or maybe even if not;  I'm not sure about that).  For example, our daughter, who is disabled and on SSI, will qualify for SSDI based on our earnings when we retire.