NEED YOU ALL'S HELP BAD HOW LONG WILL 20 MG OF METHADONE A DAY IF TAKEN FOR TWO WEEKS STAY IN MY SYSTEM

Here is the deal. I have been taking 20 mg of methadone for two
weeks.Just 20 mg. a day for two weeks.I weigh 100 lbs. and 5'7 female
would it be competley out of my system in 28 days. Please you all I
need your all's help bad here.. ANY INFO WOULD BE GREATLEY
APPRESHATED.... I WILL BE GETTING DRUG TESTED AND I NO FOR A FACT THEY
TEST FOR METHADONE... WHAT WOULD BE A GOOD WAY TO GET IT OUT OF MY
SYSTEM FASTER? THANKS YOU ALL..   CRAZY