How long does ecstasy stay in your system?

Friday night I took a pill and realized that I had to do a drug test during the week. Now I'm freaking out because I don't know how long it stays in your system. It is now Tuesday. Should I be fine to take the test by Wednesday or Thursday?

: http://alcoholdrugstreatment.info/how-long-does-ecstasy-stay-in-your-system-2