Welcome to YT! Sorry you couldn't have found us for a happier reason, but we are glad to have you!
There are quite a few things you can do to help with constipation. First of all, make sure you speak with your vet. You can also try feeding a bit of raw carrot, or a teaspoon of canned pumpkin, or a tiny bit of mineral oil. Other folks take a washcloth with warm water or mineral oil and rub the pooper with it. Medications can cause constipation, and your vet may adjust as needed. Give them a call.
What's your baby's name? When you get a chance, please post pictures!
Good luck, and let us know how it goes!