There are always bad things at home recently. Why? What is the omen?

It is really a sign of something bad. Some husbands can break the custom, but I don't know if it will help your father's illness. Generally speaking, people who break the customs will be much better. I suggest you find a better husband to ask about breaking customs or paying off debts. Go to the temple to worship Buddha, pray for your father, and believe that you know Buddha. I hope it helps you!