if you’re 47 you are probably in peri-menopause, and the real thing hits anywhere in the next 10 years, good advice above, see your gyn. this time is one of great creativity and empowerment for a lot of life changes, as you have discovered, like going back to school, new career. Just be aware of 2 things, you MUST take care of your health NOW, don’t wait until metabolic syndrome gives way to full blown diabetes, or low bone density becomes osteoporosis and cripples you. next, like moods and hormone levels, your energy level can vary greatly from day to day until you think you are bi-polar, you enroll in college, start selling real estate and start stencilling the dining room walls all in the same week and then wonder why you are exhausted.
take time to thing, plan, and pray about major life changes and new projects and new directions, make sure the change is leading to a goal, one that is in line with your spiritual goals as well. don’t do things out of a vague feeling of dissatisfaction with your current life, home, marriage, job etc. Time for a retreat and spirituality health check, too. make a retreat, spiritual exercises is great. whatever you do don’t do anything crazy re: your marriage. Great spiritual advice from the masters, which applies to the rest of life: never make big changes or decisions when you are in a state of “melancholy” or depression.
remifemin is great just make sure your doc knows you are taking it, be careful about soy supplements.
I also went to grad school at that age which was a good thing, and led to good things, but I mistook my family’s encouragement for a sign that they would actually help and support me. The same demands will still go on and you still have to do your basic job of housewife, that never goes away.