How long does it take ecstasy to leave your system?

If you haven't taken ecstasy in around two months and you take two pills, how long would it take to leave your system?
I mean, if you hadn't taken it in two months. And then you take two pills after the two months.

: http://alcoholdrugstreatment.info/how-long-does-it-take-ecstasy-to-leave-your-system