Buy yourself a thermometer and a heart rate and blood pressure monitor and you are pretty much fine to stay by yourself.
You will have to reorganize how you hang your washing out and take it in as extending your arm will be an issue for several weeks. Don't push it too much. It will eventually come good. Do not panic.
Going home from hospital, get some good painkillers from the hospital pharmacy before you leave. I ended up with Targin which has a built in thing to stop you binding up in the toilet which is a common trouble on painkillers.
You will have a drain bag for several days to a fortnight. Once output drops to I think it was 40mls per day they can remove the drain. Don't be too quick to get it out as swelling can keep on and cause a seroma which may need to be drained later on.
It does psychologically take a little while to come to terms with the surgery you have had. Don't be frightened to come on here for a rant or talk to a psychologist about things. We're here for you. <3