Get cleaning of your teeth that is scaling and oral prophylaxis and if bleeding gums and swelling present get laser done it will heal

All are symptoms of gingival inflammation (Gingivitis), your teeth needs cleaning (Scaling/Oral Prophylaxis).

Please get yourself checked by a dentist and get a complete cleaning (scaling & polishing done).

Bleeding gums and bad breath is a sign of your gum infection, get your cleaning done with your dentist.follow the instructions after cleaning use proper mouthwash to get rid of bad breaths again.yellow teeth are  normal common but if its due to your depris on tooth  you ll be fyn with cleaning itself,for your grey gums we have view your condition to give the treatment options.