I'm having continuous nightfall from 1 year. I was masturbating almost everyday before 1 year, but I have decreased it to minimum level like once per month. I am having acute gastric problem and stomach upset. And recently I was having dark stool and i tasted the stool and it came as occult blood but after taking medicines it disappeared after some days but the ultrasound report was normal .I feel weakness at times and my weight is lossing. So plz tell me all about these . I am in depression