There's Something In My House/i'm Freaking Out!

[Topless In Texas]

OMG!!!! i'VE BEEN SOUND ASLEEP FOR THE LAST 2 HOURS!!!! Me and Caitlin kept thinking we heard like a 'knocking' noise earlier, we blew it off. Well it just woke me up out of a dead sleep. It sounded like it was coming from my windows facing the street. I grabbed the phone and was waiting to call the police.
I peeked out all the blinds and didn't see anything. Then It sounded like its coming from my chimney, in between the windows... NOT birds either!!!! Its hard to tell. But the way the knocking was was just like someone banging on a window and if it has feet it sounds like its BIGGER than a bird!!!!!!! (ALOT BIGGER!!!)
I'm totally freaked out right now but dont want to make an *** out of myself. I WAS looking forward also to 6 hours sleep tonight! Its really windy outside, and i hear the 'activity' going on now and i'm upstairs on the other end of the house!! I'm scared to keep the dogs here tomorrow while i'm gone, if its a big critter, if it gets in, it might hurt them!
do I need to call a chimney sweep to come look or what? HELP! I guess I have to be here if I do? UUGGHH!!!!!

TOTALLY freaked out IN TEXAS **when will it end????**