I've left my lights on countless times during the past few weeks and drained the battery doin' it... I keep havin' to push start it and charge it but now I think it's fucked up... Everytime I start my car I have to hold the key and wait like 5 seconds for it to start up even if I hadn't let the battery drain... Is my battery fucked up or could it be somethin' more?

 

it probably is the battery... go to the local parts store and have them test it out to make sure.