Does the village have a village hall / church hall?
If so, take the pram up there and read the noticeboard. There will almost certainly be adverts up for when a parent and child group of some kind meets.
Next expedition should be to said group. Someone else will hold the baby, and maybe give you a cup of coffee. You can feed whenever you need to. And you will meet people who are at a similar stage to you.
They don't have to be your 'always friends' - but going to a group will get you out of the house and allow you to meet other people.
(DD was born 2 weeks after we moved into a vllage, and I already had DS, just 2. I was a devoted mum-and-tot group attender for the next couple of years - the music one, the one in the next village, the one iun my village. DD didn't sleep at night, DS didn't sleep in the day, and I was hallucinating with sleep deprivation, but all I needed to do was to get the pair of them into the village hall and I knew that someone would help.
And honestly, it's OK. I was in a sort of opposite situation - exactly the same medically but I had such critical reasons for leaving the house (moving country, DH had gone to that country ahead of us) that I never got to think about it at all, i just had to do it. And through doing it, I found out it was OK. But with no reason to go out, I can ust see how it can become a huge hurdle. Start small. be kind to yourself.