We've got a pregnant athsmatic, one child of school age, and one preschooler in our household. Just down the road, at the in-laws', one is over 70, the other is under.
Yesterday's "warning of imminient isolation" advice suggests we've got two at-risk individuals, one in each household. One house has room for an individual to isolate themselves from others, but the other just doesn't have the space. Then there's also the question of when schools will close (for Easter or otherwise), and what my work situation will be. A twelve-week lockdown would extend beyond the baby's due date, too.
We've got a fair bit of thinking to do, to decide how to deal with this situation. There are several permutations and variables that are yet to resolve for us.