You see, you are trying to justify taking this drug, as long as the risks to the fetus are small. Taking
this medication is justified as long
as you are taking
it as prescribed. However, you are addicted and you aren't able to do this. It's not a matter of will power, or you being a weak, or bad person. It is about you needing help.
You are not the only one. I prescribe Vicodin on a daily basis, including to my pregnant patients.