Tina,
I am hopefully coming toward the end of my donation journey. Even though I went into it thinking I was prepared to do what it takes (and I was), I do have to say that I was suprised on what that meant.
The testing and preparation in the process is a bit taxing but I know in the end it will be worth it. People's reactions seem to vary and that is a bit difficult to get used to. I have some folks who do the "you are so brave and what you are doing is admirable" to "OMG! You have to be kidding!" And, some folks actually started asking my spouse about why they would allow me to do it. So, just be prepared for these oddities.
I am blessed though that I am doing this. It has forced me to focus back on myself from a physical and spiritual aspect. I have found I am more grounded in both areas.
I have a stressful carrier that used to eat up a lot of my time. My Blood Pressure was out of control and I have a family history of hypertension. I used to run a lot but due to work/family stopped to focus on "more important things".
My situation was time senstive. My uncle (raised as my brother so I call him my bruncle) is running out of time. I was the only family member who even made it past the first round of testing. Stressful in and of itself. After I was told I must drop my BP down I joined an extreme boot camp for exercise and focused on myself with support from my family.
I am now down over 50 lbs and in extremely good shape. There have been tons of delays, moments of anxiety while doing a 24 hour blood pressure monitor test. Last minute challenges at the last minute where as I make it to the end that they found I had a small cyst at the last minute on my right kidney. Lots of dietary changes and trips back/forth to the MD for blood work, tests, and other items.
I guess what I am saying the donation process may vary but for me it has been a whirl wind experience and at times feels like a constant battle and bureacracy. Yet, I would do it all over again. Even now I have a date set finally or surgery and am going to post that under a separate thread shortly); however, I have come to a peace about the fact that it could change and I am not in control. In fact,during my last round of tests for an UltraSound, I had 3 separate problems with paperwork and at the last second they had to re-do everything due to a typo (my appointment took over 4 hours of extra time due to the chaos) and all I kept saying to the staff was No problem, if anything this entire process has taught me patience. They looked at me like I had 3 heads LOL.
Do your research as well. I am surprised that there is not more information out there for potential donors. I have learned more from this site than I thought possible. And, in my round 2 testing with the one on one interviews, I was fortunate enough to meet with one of the surgeons who was extremely forthcoming about the procedures and post-donation issues that I have read about on here and other places.
Request a donor buddy on here and from your facility if they offer it. And, surround yourself with support.
If you ever have a question, want to blow off steam/frustration, or if I can help in any way then feel free to private message me.
Good luck on your journey and I hope you find it as rewarding as I have thus far (and I haven't even made it to the end yet)

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-Scott