If you have bleeding gums you think you should leave them alone to heal before you brush and floss. On the contrary, your gums bleed because they are covered in dental plaque and bacteria accumulated along the gum lines, provoking inflammation.
Brushing and flossing will help removing plaque from all the teeth surfaces and will help inflammation to come down. You will notice that after a couple of weeks of proper brushing and flossing the bleeding reduces considerably, and will gradually disappear if you continue using a correct brushing and flossing technique.
A good oral hygiene combined with regular visits to the dentist will keep your gums free of disease.