Can I qualify for a break or credit for taking care of my disabled spouse, even though I do not get paid for it?

I do not work because I have to drive my spouse to appointments, and make sure there are no issues (mobility & balance) while at home. I was paid by the VA for a few years, but they changed their guidelines and we no longer qualified for a paid caregiver stipend. I have to attend appointments due to TBI & memory issues. My spouse is not able to drive, so I do all the driving for us and our high school student, making work next to impossible.