For my iphone 4 please tell me this is a joke?

Ok so i have iphone 4 with verizon and since i get 2gb of data i'm cautious with my data, so i check daily.last night i checked it said i sent 10.3 mb and received 35.7 mb. This morning like right now i woke up and checked again and it said sent 4.0 gb and received 4.1 gb. This is not true right? I don't want my parents to kill me for overusing and i don't like calling customer service

Added (1). @Dfwteddybea no i was asleep didn't have anything on, go from 10.3 mb to 4.0 gb in a few hours?

Its very possible, did you run pandora or another streaming music app/service?
You can go thru date real quick that way.

If you didn't intentionally use some audio or video service it so probably unlikely you actually used all that data.

I would suggest restarting your phone. Especially if you haven't done so in a while - some bugs can start to pop up when its been on for a long time. Often just restarting the phone can fix a lot of bugs.