Get ready for some serious discussions with your partner (romantic/business/best friend), because it seems like certain issues have been brewing at your core for a while, and now they may reach a boiling point. This is a good thing, because it is UNHEALTHY to hold onto stress and anger, it actually harms your DNA and shortens your lifespan.* The point is, an argument is the least of your worries. If you need to have a shouting match, then do so, because nothing is worse than holding onto negative emotions. And just remember, conflict leads to conflict resolution; avoiding your problems leads to bigger problems.
*Interesting article about how stress can fray your DNA, and harm your health: http://www.apa.org/monitor/2014/10/chronic-stress.aspx