So, I just bought a 2003 Audi A4 3.0. Everything is fine and just now as I walk to the my car, I unlock and accidently push lock so the lights flash once. I try take the key out of my pocket and locate unlock and now no lights flash and car doesn't unlock....? I replaced the battery on the key thinking that was the issue and it still doesn't work. Its late here and only option is to use the key to unlock the door....which will eventually trigger the alarm and being that I cannot turn off the alarm with the key...what do I do?

What's do you think the issue is? I replaced the battery on the key..again, I am new to the Audi world and any help would be great...plus I have to go to work tomorrow...any help asap would be really great at this point.