Gum disease concerns

In around december 2024, I bought my first packet of nicotine pouches. It is Greatest 16mg. Ever since then, I have been using the same package, using up to 2 pouches per week, with lots of weekly gaps inbetween. In the past two weeks, my most used location has been hurting during brushing. It's annoying, but I can sort of deal with it. I was assured by a friend of mine that this is something he dealt with and that I shouldn't be concerned, however I would like the opinion of others on whether or not I should be concerned. I have not used anything in that spot ever since I noticed the pain and it certainly has become easier (not sure if I'm used to the pain or if I'm brushing lighter or if it's really going away). My main question, should I be concerned? Is there anything I can do and is there any advice that can be given? Thanks.