2006 Dodge ram headlight problems

My 2006 dodge ram headlights are acting up. When the low beam is on the right headlight works the left does not. When i switch to hi beam the left headlight works the right does not. Does anyone know whats going on, and what I need to do to fix the problem?

You may just have 1 high beam out and 1 low. Take a look at them and check they may have gotten loose to