I used carrier since my son is on his 6th month. I find it more stable than carrying him around without it. I see him very happy swaying his feet and wagging his arms excitedly as we walk around. What I am afraid of is it might be hurting somewhere especially that his head seems a little forward compared to the position of his shoulders. Sometimes I feel, too, that his chest area is being hurt by the belt that secures him in place. How safe are carriers?

Thank you.