Unmarried men cannot enter the delivery room.

First of all, this can't be a legal category. Superstition at best. Mainly worried about the psychological fear of unmarried men?

Second, we still believe in this superstition in modern society.

So all male gynecologists are getting married?

Newborn boys must be unmarried. How is he? He was born in the delivery room!

Rural women may not have a delivery room yet, but what about her?

Don't be afraid. It's just a common cold. Just see a doctor. Your friend is likely to have stronger resistance than you.