So I just noticed that when I press my front brake, the brake light comes on, but when I press my rear brake it doesn't. Any suggestions as to what could be causing this?

 

check the pressure switch on foot brake hydraulic reservoir

 

Rear brake light switch probably went bad, very common. You can get a replacement at an auto parts store if you don't have access to a dealer. Be sure to bleed your brakes after you change it, to get rid of any air bubble in the system. Mine was super easy to replace.

John