Hi Amanda, and welcome to the Forum,
I am so sorry to hear about your partner. It must be a dreadful time for you. I wonder whether it is worth going to your GP and see if he can give you something to get you through this difficult period. It is the old adage about putting your lifejacket on before you help anyone else.
It might also be worth contacting the Stroke Association and see if there is any local support in your area:
https://www.stroke.org.uk/finding-suppo ... UREALw_wcB
Does your partner need considerable physical care? If so, are you the one doing it all? As others have suggested, it is also worth contacting the Social Services Department of your local authority and asking for a care assessment. If paid carers can take away some of the load, it might be easier to cope.
I do hope you can find some support during this difficult time and in the meantime, please feel free to chat to us. We have all felt desperate at some stage or other ...