Hi,
Welcome to health care magic,
Bleeding during defection with diarrhea and excessive gas passing since few days could be due to piles or fissures, fistula or rarely any growth in rectum etc.
But it is difficult to tell exactly without clinical examination and
digital rectal examination.
So,first you need to get examined by surgeon to rule out above possibilities.
Colonoscopy should also be repeated once again since you had it before 1 year.
There is vary rare chance of having
colon cancer or
rectal prolapse by which one may experience blood or gel like mucus in stool with diarrhea,so I will not think above these possibility at right now and will want to rue out the commonest above possibility first.
You will require quinolones antibiotics with antiprotozoals if the cause is piles or fissure.
Anovate or Dobesil cream or ointment to be applied over anus after defecation,Hot sitz bath,Sit naked in hot warm water for 15 minutes.
Avoid alcohol,
Avoid oily and spicy foods.
Consult general surgeon for above investigations and examination.
Thanks and Regards,