What do you do when you think you've found the one, but you can't stop fighting with each other?

We have been together for about eight months, and we moved in with each other after a few months. Neither of us is the most stable, down to earth of people, but we love each other and we have so much in common. since we met each other we left what we we’re doing in college to persue something more suitable for us, so we have ended up spending every waking minute with each other. Problem is, we are always fighting. At least one big fight a day. Is this because we spend so much time with each other and because were stressed out at the moment? Is this relationship doomed, or is this what would happen to any couple if they ended up together all day every day?