Question: how many months does a baby start forming in the womb?
Answer: At 5 weeks the embryo is the size of a grain of rice (about 2 mm long) and would be visible to the naked eye. It has the beginnings of a brain with 2 lobes and its spinal cord is starting to form. At 6 weeks of 'pregnancy' (3-4 weeks after fertilisation) the embryo has a head with simple eyes and ears.