You have indeed been given the gift of life. But that doesn't mean that the recovery journey won't be difficult. At 46, it is a terrible surprise to have something like this happen. We all think of surgery as something like an appendectomy, you go in, go to sleep, come home, are in pain for a couple of weeks, but then it all gets better.
This surgery is very different. And you had a very complicated surgery and repair. It was such a lucky thing that it was discovered and you are here and in recovery mode.
Some people, the very lucky ones, sail through the surgery, God bless them. But I think that is rare. The normal recovery is about 6-8 weeks in the early phase, then a year or more in the final recovery phase.
I helped my husband through a couple of heart valve surgeries, and a couple of lung surgeries, which Joe thought were even worse than the valve surgeries. He was always in great shape, but he didn't just bounce back. It knocked the starch out of him for a good 6-8 weeks, weak as a kitten, after which he felt fairly good, but it took at least a year before he could say he felt much better.
Sure, it will get better each day, but you will have days when you will backslide and it will be discouraging. Just keep putting one foot in front of the other and keep on walking. You already sound a little better, that's good.
I think you will be a very good person to help others who come along and have difficult problems. They need to hear that although it will be a long journey, things will get better. So, hang in there. Eventually, you will be able to help some very scared folks.
I wish you all the best, you're a brave gal.