Generally speaking, the risk of fetal problems with Lortab are low, and the fact that you've had a normal CVS as well as level II ultrasound is very reassuring.
It is difficult to predict the level of opioid medication that will cause withdrawal symptoms in a newborn baby. Generally speaking, the lower the dose the better, and stopping the medication prior to delivery will definitely decrease the risk. If you stopped the Lortab between 1 to 2 weeks before anticipated delivery, the risk of withdrawal would be extremely low (if you deliver at your due date). You do, however, need to balance your pain treatment with the risk of withdrawal, and the best person to discuss that with is your obstetrician.
Thank you as always. I do appreciate your help!