I need all the info I can get about becoming a Prenatal Ultrasound Technician.?

I am 46 years old and starting over after being a stay at home mom for 17 years. I am scared that it will be too hard for me after not working for so long. I got a bachelor's degree in Aviation Management, but then got married and had a baby. What is the schooling like? Is it a good career choice as far as pros and cons of the job? If you are in the profession, do you like it? Is it hard to get a job? What's the best way to go about it? Anything you can tell me. I live in New Mexico and am thinking of moving to Arizona, and so either of those two places would work for me. Thank you SO much for helping me with this. It is a huge decision, and I am a bit apprehensive to say the least.