Sugar addiction

I swear I think I have a sugar addiction. I’ll rather eat snacks and junk food than real food . Or I’ll be full or not even hungry but will eat snacks just because it’s in front of me . I’m gaining weight and I’m really considered overweight for my age and height (20 , 5’3 , 170lbs) I’m so tired of it honestly . I’m in a tummy tuck group on fb and most of them ladies in there take something called phentermine to help them lose weight (it’s really to help you not eat or think about eating) . Question is how would you bring this up to your PCP ? I seen my PCP one time so we don’t really have a relationship. (I was always at the Gyne so pcp was not needed at that time) I’ll be scheduling another check up in Jan it’ll be a year since I last seen my pcp