That all depends on your work history. If you have paid Social Security taxes (FICA on your paycheck) and have worked enough quarters to be eligible, then your husband's income has no bearing on whether or not you get benefits. That's SSDI. If you haven't worked enough quarters, or paid SS taxes (some employers allow you to privatize your SS under certain rules), then you would file for disability under SSI. This is income and asset based and there is a chance that you wouldn't qualify for it, even if you were found to be disabled.

Here's a link to Social Security and an explanation of disability benefits:
http://ssa.gov/pubs/10029.html

It's certainly worth looking into if you don't feel well enough to work on a consistent basis.