@SunshineCake if I've helped AT ALL I'm glad - makes ME feel less of a failure!
Not that you are!
I remember when I had gf, one day literally all I did was fetch and open the post and I was wiped for the rest of the day!
Regarding worrying about dh, could you possibly (as a family) fetch in help? Either voluntary or perhaps paid (don't know your income and I don't need to just giving you ideas) often we are reluctant to ask for help when we should.
I have alerted my therapist, gp, mum, boots the chemist...
I've got the nhs support volunteers number ready if I feel I need to use it
Mum has said she can ask her neighbour to drop things in to me if needed he offered this to her when she told him yesterday bless him cos he knows I'm housebound and mum can't get up my millions of stairs cos of her own health. Boots have said they'll rush through any prescriptions/meds for delivery if needed (I'm debating that one as I'm not very sure how much of my inhaler I have left), mum is also checking in with me daily.
Dd also checking in and advising on all the admin side as I hadn't a clue! I still don't have a clue I just do what she tells me! 
I had to ask her how to fold the bloody box for the pcr test cos I'm crap at things like that it was like sodding IKEA flat pack!
Your gp surgery will also know of local resources and volunteers that may be able to help just till you get back on your feet.
Pretty sure there'd be people doing dog walking in that.
My aunt does voluntary dog walking now she's retired herself for people that are temporarily laid up/infirm she loves it! It's a local charity she does it through but from a quick google it does seem to be a "thing" so might be worth googling in your area or speaking to local pet/dog charities?
Would I be right in thinking home start may be able to help? I'm kinda out of the loop on that stuff now.
Regarding the friend you've been wanting to see for a while now is there any way they can visit you? Even just for a couple of days? If they're as good a friend as you say they won't mind/care about how things are your end. I've been that friend and I've had that friend visit.
There's an ethos we seem to connect with:
"Good friends don't care if your house is a mess, you've no make up on and your hairs scraped back, BEST friends get stuck into the dishes, put a laundry on, make you a cuppa and get you to laugh at the hair!"
My most memorable instance of that was when my then closest friend came to visit when I'd just got home from hospital after last mc. I was in a granny nightie (couldn't have any waistbands as I'd had several abdominal surgeries and so was still healing), granny pants and maxi pad which kept leaking, so I had a towel folded on my seat on the sofa, had been sobbing crying most of the time big snotty tears, so was puffy tear stained face, dishes were piled up, laundry piling up, flowers EVERYWHERE in the most bizarre containers mostly dying as I'd run out of vases!
She just breezed in, put the kettle on, she'd brought my favourite biscuits (which are hard to find! And not cheap!) stuck the dishes soaking while kettle boiled, made me a cuppa, MADE me sit down cos I started feeling guilty and trying to "help", washed the dishes, wiped the kitchen down, stuck a laundry on. Then she sat and had a cuppa with me and just...listened. No judging, no thoughtless comments, no awkward "jokes", made kind comments and positive ones where appropriate that was all. She hung the laundry before she left, put another load in and then she actually tucked me up in bed! Which kinda made me laugh as she is several years younger than me and it felt quite maternal. She was amazing at that time. Will never forget that.
I've done similar for others too, I hope it was received the same way it seemed to be.
We all need help sometimes 