your teeth are badly affected with gum infection
the bleeding is due to heavy plaque/food debris deposition.this made gums inflammed,soft and bleeding.there may be pseudopocket and loss of epithelial attachment and destruction of periodontal ligament.the teeth may be mobile .
visit your dentist
and get thorough check-up.get deep scaling and root-planning done by your dentist.
use soft interdental toothbrush and dental floss to clean your teeth.
always brush your teeth twice daily,ie,in upper arch from top to bottom and in lower arch from bottom to up.
rinse your mouth after every meals.
also get blood investigation to rule out any medical problem underlying,like,epilepsy,diabetes
use chlorhexidine gluconate
mouthwash to gargle.