Balance Loss

So, when i checked my balance a little bit ago, i found that i had 1700. Last night i had over 20k. I do not recall spending any of it, or putting it in a trade sign. I am worried that i might have been hacked, but i don't see that possible.
Is there a way to check my balance changes over the course of the last 24-48 hours? If so, can someone tell me if i spent anything and where i did, because i am very worried.
-thanks, hockey

 

no, i didnt make any signifagant money in the last week or so

 

not that i know of, im very secure about my account, but its a possibiloitry