Tammi and Katie are exactly right! Sympathetic symptoms. Even the stress you're under can cause some symptoms that seem ALS related. It might help to get some counseling if you're feeling overwhelmed.
Only 10% of ALS is connected at all to family--but none is related to 'spouses" . They don't know what causes it exactly, but it's not airborne or bloodborne (the ways to 'catch' something) You're safe.