I have three beautiful children and every single one of them had trouble with constipation around this same age. According to my pediatrician they are still trying to get the hang of pushing and not holding. You beautiful boy needs some assistance. This is what my pediatrician recommended for me to do whenever my children became constipated. Take a Q-tip and coat it in vaseline. Insert the Q-tip a little bit past the cotton part into the rectum. Sort of twist the Q-tip around and move it gently side to side. This movement and the fact that they dont really like something pushed up into the rectum causes them to push against it, therefore making them poop. I know it sounds gross and somewhat painful, but it really isnt that bad. When you go to put the Q-tip in push his legs back into a frog like position, this will make him more comfortable. If this still doesn't work go to your local drug store and purchase infant suppositories cut the suppository in half, take the suppository and insert it into the rectum and use the Q-tip with vaseline to push it up until the rectum grasps it and pulls it in. Again, this will cause him to push against it, it will also dissolve and create a very liquidy poop, making it easier for him to go. I hope that this info helps, I know how stressful it can be when your newborn won't poop. Please feel free to contact me if you have any other questions. Good luck and keep us posted.