My alarm keeps going off
 

My car alarm keeps going off for no reason it started today and wont stop every 5-10 minutes, i dont think it can be the battery becuase i changed it recently, and i doubt its the doors and trunk and hood because the car locks and beeps when i lock it rite now i have to park the car in my garage and leave the hood unlocked to keep the car from locking can someone please help i need to fix this before someone throws something at my car

When the alarm goes off see if the interior lights are on. Could be a bad door switch that acts up once in a while.

the funny part is after i parked the car in the garage overnight with the hood opened it never happend again odd>??? so now i'm worried that if i leave the car at the mall or at work if its going to be going off all the time or not. but again since i parked it over night it hasnt gone off as far as i know