My husband has been suffering with bouts of diarrhea and then constipation. now he has blood in his stool. should he go to the er?

Primary Care: No. He has a common primary care medical problem. He does not need to go to the ER. He needs to go see the family doctor.

Depends: If it is a lot of blood or his is feeling very ill, dizzy or any other concerns, yes. If this has been going on for a while and he is otherwise feeling alright, contact his doctor ... He may be able to see him in the office.