PREGO AND NO SLEEP

So I just found out I'm expecting two days ago and called the Obgyn she said to stop taking my anti anxiety med that I take to sleep (klonopin) cold turkey. Since then, I have had panic attacks numerous times and literally haven't fallen asleep... In two nights. I talked to Obgyn again they said to take Tylenol pm tonight but my anxiety it thru the roof... Anyone have insight?? Really feeling helpless and so consumed w anxiety....  :(