Opiate withdrawal

I recently found out that I am 6 weeks pregnant. I have a past of drug useage and although I have been clean for a while. Tuesday-Friday I was using opiates. I woke up this morning withdrawing and took 1mg of suboxone. I am scared to death of wd and hurting my baby but know that I can't continue using while I'm pregnant. Does anyone have any insight? Please help. :(