Im considering a nursing career and i have some questions....?

Ok so right now im about to start my senior year in high school and im thinking about careers.

I wanted to be a nurse anesthetist but i came to the conclusion its a very stressful career and it requires a whole lot of chemistry which im not very fond of. Then i thought about becoming an ultrasound technician but i think it would be kind of boring just sitting around all day.

My other choice was neonatal nurse or neonatal nurse practitioner.

First of all, what is the big difference between these two (neonetal nrse and neonatal nurse practitioner) ?

Also, I think i would be scared to hurt a baby like do someting wrong that will harm the baby that already has some problems...

My biggest fear is nursing school. I've done some research and i read that in nursing school ill have to go through a lot of training in all levels... and that worries me bcuz i kinda get grossed out by really bloody scenes and painful looking things.

Any advice or suggestions ?? Thanks :)