My iPod touch 5th gen screen is unresponsive to my touch. The time changes accordingly, but I can't slide to unlock. My home button is jammed; I've been using Assistive touch. What do I do?

My iPod touch screen is unresponsive, and it only happened recently, after I updated to iOS 8.1.3. The iPod kept asking me to sign in to iMessage and iCloud before I updated, and it wouldn't accept the password I entered even though it was correct... It kept showing up repeatedly, to the point where I couldn't do anything, because it kept showing up every 4-5 seconds... So then I updated through ITunes on my computer and it still kept happening after I did it... So, everytime it asked me for the password while I was on another app, I pressed "cancel." Then, I tried to go "home", (I used Assistive Touch) and it didn't go home. So, I clicked the Power button and it turned off... I clicked the Power button again and the lock screen came up, as it was supposed to, but I couldn't "slide to unlock" or slide to "shut down" even though it changed to that screen... My iPod turns 2 years old in a month... Is there any way to fix it without taking it to an Apple store, or is that inevitable?