@Zisterhood Sorry about your DH.
I had a couple of days off when DH was diagnosed in Apr 16 - we were just in shock.
Then a couple of weeks later he was emergency admitted to hospital for a fortnight and I spent most of my time there - popping to work which was 10 mins from hospital for a hour or so at lunchtime when they wanted you off the ward. I used that time to eat lunch and keep my workload moving - delegating etc. I then had the week after he was discharged off - but that was planned as we were getting married.
Work just put all of the above missing time to compassionate leave. But DH is a partner there and I'm not sure how they would have been for me if it hadn't been DH, IYSWIM.
I then had very little time, I'd drop DH at hospital on chemo days and pick him up on the way home. I work 25 hours a week so could flex round that. Mostly he was okay during the chemo period apart from the 3-5/6 days after when he just slept.
I've now stopped work at the end of Jan as things have deteriorated, I've got enough TOIL & holiday to cover Feb but I don't expect to get paid after that. I'm going to put in a claim for Carers Allowance.
It might be worth you seeing your GP about your own mental health and whether you would get a sick note.
Depending on your sick leave policies you may get full pay, or it may be SSP.
I don't know enough about Carers Allowance to know if you'll be able to claim that (my DH is terminal so now has automatical entitlement to PIP which is then a gateway to other benefits - you are in a different situation).
Wishing you and your DH all the very best.