My baby won't poop😩

Erica • Proud Mother of 5 💕💕❤️❤️
Ok I took her to the doctor he stuck what looked like a long vasline stick up her bottom she pooped like 10 minutes later that was two days ago now nothing her stomach is not hard it's really soft she don't seem constipated at all she's a week old how what could be the problem should I take her to the hospital I never her this problem with my other kids 🤔🤔🤔