We Have A 9 Week Old Baby That Just Has

we have a 9 week old baby that just has the most horrific scream. my wife is on methadone i thik around 60mg. to me it seems like she is in pain. could it be withdrawl? her mom stayed methadona throgh the pregnancy per orders from her clonic. the baby just starts flaling and gets very tihgt, if a bottle is not in her mouth she is screaming. my wife does breast feed, she pumps