Has anyone been worried about labia majora pigmentation?

My labia majora are a bit on the darker side, so I've been self-conscious about it, but lately I feel like I've become even more sensitive.

I mentioned this to a friend on the phone last night, but my husband, who was right next to me, overheard it, which was so embarrassing.

Fortunately, he didn't say much, just that I must have been stressed, but I was so worried that I stayed up all night.

I wonder if I'm being too sensitive, but then I look in the mirror and get stressed again—it's a constant cycle.

I plan to go for consultations with Juyeon and Gangnam Esther, so I wrote down these things to ask when I get there:

What is the cause of the discoloration?

Can it improve naturally?

Are there any care methods other than procedures?

Safety of the procedure / recovery period

Possibility of side effects or re-discoloration.

If anyone has consulted with similar concerns, could you please let me know how it went?

And if getting whitening treatment definitely helped?