What is the ruling if a woman experiences bleeding before her expected cycle date?

Question:

If a woman experiences bleeding 12 days after her last haidh (menstrual period) its assumed that it is istihada (irregular bleeding) as its within the 15 days of purity. Now if that bleeding carries onto day 16, does it still remain istihada or will it become haidh as it has exceeded 15 days?

Ruling on praying salah in congregation, standing two meters apart

Question:

In relation to Covid19 social distancing guidance set out by the government, will it be permissible to forgo standing shoulder to shoulder ruling in congregational Salah to maintain social distancing (standing two metres apart)?