[Concern] Is it okay to get teeth whitening even if my gums are weak?

My gums are a bit weak and have receded, so I received treatment.

Since my teeth are somewhat discolored, I want to get teeth whitening, but will it cause any sensitivity or discomfort?

Scaling feels okay when I receive it. It must be more stimulating than scaling, right?

Actually, since I always drink coffee, I think it will be difficult for the whitening treatment to have a lasting effect, so I'm hesitant.

I'm very interested in teeth whitening and curious about the information.