it defo gets better as each day goes by, I'm on day 10 methadone free!!! right now i feel good but like you bout 2 hours ago I was thinking about using.. i know from past clean time that you do get to that whoopee I'm clean feeling and each day after that gets better and better but if you've been using for some time then it makes sense that it would need a good while to recover.
i wish i could say to you that you'll feel great in 4 days/ 6 days etc but i can't but i can guarantee you that if you stay drug free then you will get there. enjoy when you feel good and try distracting yourself with something when you feel sh*t...
stay strong your not alone sure there's loads on here win the same state, we all feel you pain.