Why can't I hear my audio anymore in Premiere Pro?

I must of somehow messed with the settings, because now when I open a project (regardless which one) I can no longer hear my audio. The audio is shown in the time line, so I know it is there. My speakers work, and I can hear audio while youtubing and even in After Effects. Just no longer in Premiere Pro. I see nothing out of the ordinary, I did not mute it or anything. And if I try opening a audio clip in the adobe audition it plays. I did some changes with an audio clip awhile back. I think somehow I must of did something with the settings by accident. Please help!