First time mom

So I knew my body was acting strange but I thought I was thinking to much into possibly being pregnant so much my body started to adopt to it. I was just talking about how I need to lose weight because I’m gaining weight pretty rapidly just to find out the reason... I’m pregnant. I’m so scared, excited, nervous and anxious all at the same time. I would take any advice anyone has please. I’m usually a planner and control freak but how can you fully prepare for something you still have so much to learn about. I’m 24 and crazy thing is I’ve always been a “aunty mama” to my nieces, I’m talking custody and all, so why do I feel so off guard and afraid to fail. I feel like it’s more so clouding my happiness.. this fear thing. Nevertheless, I’m expecting and I would love some advice.