My daughter is 4 months and 20days old. She has already getting her tooth(one) in the lower jaw. Is this too early? Is this okay?

A. hi usually babies get their teeth at the age between 6 to 15 months. but all babies are different. so it is normal. give Massage with clean finger on sore gums of your child. provide silicone teether. provide apt sun light at least 20 minutes a day. feed your child on demand. maintain good hygiene