Hello Tidehill.
I found myself in a similar position when we lived in France. It is miserable enough coping 24/7 with your husband's advancing illness, but negotiating the Spanish Health Care system must be an added anxiety.
I found, in France, that the local, '
Mairie' (Town Hall) was a mine of information, and, in the early stages of his Alzheimer's, the village bar was a lively place for a sunny outing - and a few tasty tapas type snacks should bring a little sparkle to the day for both of you.
I have a suspicion that Spain has the same attitude as France; expecting, 'the family' to manage the daily care alone; but we immigrants often have no family to rush to our aid in our country of residence.
You don't say if your husband is British, or a Spanish National; but if he
is British, would it be possible for you to move back to UK?
That was what I did,simply because I couldn't face the dreaded French red tape, and I haven't regretted it.
It is so much easier to be ill in one's own language. Of course, if your husband is Spanish, he would probably be happier to remain in Spain.
I sold our large French house, which just about raised enough loot for our move to a small, easy to manage retirement flat in UK
However, once I was back 'home' I found that there was a lot more assistance available to full time carers. There are wonderful day-care centres, the attendance allowance, carers allowance and other goodies to help keep the ship afloat.
Your husband is possibly depressed too, which certainly can lead to grumpiness and criticism - I am afraid that depression has a tendency to go with the job of caring; very few TP members can say, hand on heart, that they have not lived through days or even months of depression.
But TP is full of people who will listen, and understand what you are suffering - they've been there too, and are such a helpful group.