I dont know if my baby is teething? He is 4 months. When does it start and when does it end? What are symptoms

Teething 101: What to expect when your baby sprouts those pearly whites read this, might be useful

Hey it can start as early as four months, symptoms are irritation, excessive drooling, putting everything in mouth, swelling on gums, red cheeks..ends when they get all teeths....but do not worry much all that baby needs is happy mamma

Agree with Chitra Taneja

There is no age as such but mostly after 6 months. The symptoms include just biting almost everything.