2004 Jeep Grand Cherokee Driver Front Window Won't Roll Up

I rolled down the driver's window and now it won't come back up. If I push
the up button on the door, I hear nothing. If I push the down button, I hear
it "engage." Then if I push the up button again, I can hear it "engage" but
the window doesn't come up.

Does this sound like the regulator? Or something else? What can I check?

And please, be as specific as possible. For example, if you tell my I should
check _________, then could you also tell me where I look to check
________?

Not very mechanically inclined here, but can follow instructions!