I went to help out at my daughter's when 3rd baby due. The day I arrived, GD tested positive for Covid, so I was a close contact. I got it 2 days later. I just stayed at their house as planned. Daughter had baby a few days later, so I was able to mind the other 2. Despite having Covid, I wasn't that sick, still able to function and the rest of the family (apart from GD) had it at Christmas, so I wasn't a risk to them.
Daughter had planned a home birth, but due to having had Covid a month previously, she wasn't allowed as there's still uncertainty about risks. But it was all very straightforward and they came home a few hours later.