Hi.....
Welcome to healthcare magic.
As per your complain you have problem of
blood in stool that may be because of hemorroid and
anal fissure problems.
I will suggest you to do some diet modifications like...
Increase high fiber foods like whole grains, oats etc...
Stool softner can use for
constipation problem.
Drink a more water.
Avoid spicy foods and fatty foods.
Avoid excessive straining at toilet.
Warm water sitz bath also helpful.
Habit a regular bowel movement.
After taking this much care still symptoms are present than consent a gastroenterologist for further diagnosis.
Colonoscopy examination can done for further diagnosis.
You have weight gain complain also so check your
thyroid hormone levels .
I hope my guidance helpful to you..
Take care.
Thank you.
Dr Rachana.