Oh, come now - let's not get so defensive.
Perhaps I was a bit harsh.
There is no "record" here, we're not in the hospital, so relax.
Listen to advice (or read it). Listen to experience.
Seeing one's patients get better is a "major perk" that comes with the job.
The whole world doesn't need to know that you are a doctor - you'll
(hopefully?) make a difference in a lot of lives over the years.
You don't need to build your self esteem by announcing it.
Buy your C/F ticket, or use miles, or become a frequent flyer; earn it.
Again, good luck.
By the way.........
Based on your original post, I find it very difficult to believe that you tell people you work in a lab if they ask. I'm quite sure you tell them you're a doctor. In fact, I would bet on it!