Need help deciding what to do?

Okay, so i its my Senior year of HS and I thought i knew exactly what I wanted to study in college, but it turns out i don't.

I think that I would enjoy doing something with babies or pregnant women. that whole babies and pregnancy thing fascinates me!

so i would like opinions:

pediatric nurse practitioner

or

sonographer

if anyone can tell me which would be better.

or just general information about the careers.

what they really do.

how much they make (yearly and hourly)

how much school

(ive researched on them but i would rather have people who actually have this career to answer my questions)

thanks to anyone who helps (: