So sorry, Azza19. I too took on my mum without looking at the job description, the hours and the pay and no interview. I didn't want to do it but you step in when they start getting their finances and appointments muddled and before you know it all the family have taken one step backwards and you are the 'volunteer' to have her move in with you, move house to accommodate her, give up your full time job, give up your social life, etc. etc. GPs just dish out antidepressants (I refused, I was not depressed I was just bloody worn out - mentally and physically). Pity looks - ah yes, that head on one side, slight smile and meaningless drivel. On top of that, every conversation you have with anyone is punctuated at the beginning or the end by "How's your mum?" Never mind her, she doesn't know how she feels from minute to minute but very often I was just SO angry. I found a bit of black humour helped and tried to find some of the ridiculous and funny things that happened to temper the tedium, the lack of support and the sheer hard work.
Mum died a little while ago. In some ways it WAS fortunate that it was a short physical illness so she did not suffer the indignities of the end of life with dementia. She was still going to her clubs and into day care (couldn't remember it but she enjoyed it while she was there).
I will not insult you by saying you are doing a grand job - you know you are and that phrase is pretty meaningless when you are surrounded by the endless sxxt in all its forms!