trier,
Hang in there, your irresolution in your capabilities are normal for a new graduate. Try and work more shifts if you can to gain experience. You are more than qualified and experience with all the tools you need to provide safe and effective care to your clients. If overwhelmed try looking to time management literature and tools. Look for those nurses on your floor or department that are seasoned and adopt the behavior that gets them through their day. You will devise want works for you, find your niche, and soon you will have your routine down. Every nursing job is different but ultimately the same. Every nursing job presents itself with its challenges. Enjoy your experience and the people you care for.
Orientation and/or mentoring to a nusing unit/floor in the States for new grad is typically 2-4 weeks. Remember your organization is responsible for training you (to policy and procedure) and making you feel compfortable - to fit in. It is not to feel feeble in asking for assistance and guidance. Your organization is vested in you and wants you to stay. If you do not feel compfortable yet, then asking for additional training is not out of hand. Good luck to you and welcome to nursing.