Waves of emotions- the baby blues

2 weeks PP and since I’ve gotten home, I’ve been having waves of sadness, excitement, anxiety about the next few months. This is my second child and I thought I had my emotions in order especially this time I have a village who can help. My husband is sick and he really is trying to help me while he’s at home. But somehow I still feel alone and often I silently ask myself if it was the right thing to have another child. I’m really confused and I’m really keeping myself together for the sake of not burdening my husband and my first born! Is this normal? How long do the baby blues last?