2 monthes ago my husband felt like a small knot or like a ball upright his stomach , and not its even bigger.
He was having some dirrahea and then constibation, then dark stool for a while , but he is afraid to go to doctor.
So, iwonder if this would be symptoms of cancer , Thanx

Sounds like classic symptoms. Convince him to go the doctor NOW to know for sure. The longer he puts it off the less chance for survival.

ALso, look for weight loss..that is a classic…but it is very important for him to go to the doctor…

I would make him an appt. with an oncologist and give him NO CHOICE of whether he goes or not. What are you more afraid of…. making your husband mad or losing him to a curable disease if he got the right treatment. And I am in no way insinuating that it would be your fault, My husband is stuborn and pig-headed when it comes to going to the Dr. I always remind him that it is better to know and take care of then, to leave it alone and possibly die…