My baby hasn't slept through the night yet, but she generally is 'sleepy through the night'. But last night she was wide awake at 4am, eager to play. Then she had a huge poo. What is going on?!? How can I prevent this from happening tonight?

Few possibilities why your baby woke up at 4am. 1. She did not have much activities in the day. 2. She slept early the night before. 3. There are things or noises that woke her up at 4am and she cannot get back to sleeping mode. 4. She had upset stomach due to Camilia teething medicine or change in her diet. There are many possible reasons. You can try to keep her active in the day so that she will feel more sleepy at night. Also try to established a sleeping routine & stick to it such as putting her to sleep at a fixed time.