I recently bought strong snus mint, swedish- and i have Been using them for 2 days, for like 20-30 min. I have Been a smoker back in the days. So after a while, I got something above my upper lip on my gums , where I had placed the snus. There is a little circle on my gum. Is this normal ?? Should I stop taking snus, or is it because it’s ‘STRONG’?