I am a 27yo male 5'10" and weigth 290lb every time I eat I have to run to the restroom and my stool is red or black but is not blood what can be?

Consult your doctor. Your weight and alimentary ailment are not amenable to proper diagnosis and advice in this forum. Please consult your doctor for proper examination and tests.
Are you sure? You need to have your physician check to make sure it is truly not blood - they can give you a stool test to make sure. Then you need to look at your diet and see if there is one meal type or food that causes it.