Ipod won't play through headphones anymore... and I JUST bought it!

I just bought my 5th Gen. ipod nano a week ago and was working fine. After I had used it on my ihome docking station, it won't play through my headphones anymore.... I use the ear buds that came with it- all the player does is imediatly play through the speaker- is there a setting or something where I can hear through the ear buds? I know I have the earbuds pushed into the jack all the way, I can actually hear some music in the earbuds (just not very loud). What can I do?