How wonderful to see you back! And with such exciting news. My friend is a physical therapist, but she started back in the days when you only needed a Bachelor's degree rather than a Master's. Hey, a Master's degree can be only two years of school, and you've already got your Bachelor's--of course, it's two years of very expensive school.
I think you're on the right track going into the health care industry. As the Boomers age, we're going to need a lot more health care people, and I'm betting Physical Therapy Assistant would be a great career. Usually people who get physical therapy really want it so you aren't always dealing with confrontational people like you probably were in customer service.
That's great that with all the stress you've managed to stay below 200--congratulations!