Tapering off pain medication

Before you guys judge please know I know this isn't smart. I've been taplerjng off of it for awhile now and am down to the very bottom. I take methadone and am all the way down to 4 mg. I just now found out I was pregnant and we are ecstatic but I'm worried about this. Do you think I could make the jump since I'm only at 4? Or do you think it would hurt my baby? Again please no judging. It's now the situation I am in and trying to deal with it the best way possible.
Edit: I have already contacted my ob about continuing to taper and she said it was safe. But due to some issues I might not be able to. I might have to quit all together. And yes I will contact her this week about this issue. Just wondering if anyone had gone through anything similar