Thanks for posting the query,
Bleeding of gums during brushing is due to gingivitis
It can be due to several reasons poor oral hygiene , vitamin deficiencies, systemic conditions , hormonal
Visit to the Dentist
and get the checkup done .
Get complete mouth scaling and polishing done.
Develop a habit of brushing teeth twice daily with a soft bristle toothbrush.
Develop a habit of using dental floss and interdental cleaners.
Use 0.2% of chlorhexidine
mouthwash gargles twice daily.
Diet plays a important role , ensure that you eat plenty of raw vegetables , fruits ,
Drink plenty of water,
Avoid eating carbonated and aeroted drinks .
Take vitamin suplements .
Hope this helps out.