Hi..2 mnth back i was passing black stool then i went for stool test report say Blood-nil Occult blood-present Mucus present Rest of the report was ok..i had pan 40 tablet for 1 mnth by consulting my doctr frnd..bt again from past 2 days i am passing black stool specially in d mrng..there is burning in my stomach and too much gas problm when stomach is empty bt after eating somethng i feel comfortable..apart from this i am not feeling anything else.. What could be d reason..what deseasei might have.. Thanks..