If I have lived with my fiance & worked as his PSS for thepast2years with a homecarecompany does that qualify as Medicaid Payment income that should be federally exempt?

We are in Maine.   We are now in a self-direct program and have a fiscal intermediary and the income is federally tax exempt - I am wondering if I can amend my previous 2 years returns when I was with a homecare company to also have that income be federally tax exempt.  This has to do with 2014-7 stating that