The timing of when your baby's first tooth comes in can vary quite a bit.Although the average age for getting their first baby tooth is 6 months, some infants don't get their first tooth until they are 14 or 15 months old. Others can begin teething and get an early baby tooth at 3 months.
Learn more about when you can expect your baby's first tooth so that you won't worry if it isn't as soon as you expect.
Related: Teething | Is My Baby Teething? | Baby's Tooth and Gum Care
Photo (c) Mary Gascho

Is it possible to see them at 20 days old. Our baby is showing a first tooth and is less than a month old?
It’s very possible. some babies are actually born with their first teeth. My son’s going to be 4 months old in 2 days and he’s actually been teething since before he turned a month old.