Can constipation cause chronic nausea, and maybe vomiting if persists more than a week?

See your Doctor! constipation lasting over a week is not normal! It's time to see your doctor, and have this checked physically through and of Domino exam. If you've tried using fiber, or a bulk laxative, or stool softener, and are having no BM, you need to be seen even sooner! Also, it can cause you to feel nauseous or like vomiting which may imply that there something blocking you from having a BM. .