It will make you and your baby uncomfortable and your baby will be much more affected by withdrawing than you will be. You could consider going on a methadone program while you are pregnant which would help control the amount of drugs you need as well as enabling you to look after your general health. Pregnant women who are dependent on heroin should contact the Chemical Dependency Unit at the Royal Women's Hospital or an Alcohol and Drug Counselling agency. Sudden withdrawal can harm the baby. Effects During Pregnancy Women who are on a methadone program have fewer complications during pregnancy and childbirth and are generally healthier than those who are using heroin.
Complications are less likely to occur if methadone treatment is started early in the pregnancy.
Speak to your doctor or health worker early in the pregnancy about the methadone program. Methadone crosses the placenta so when taken some will reach the baby. There is some evidence of a reduction in foetal and obstetric complications with Methadone. Your baby may still go through withdrawal even if you are taking methadone. The baby will be treated with either supportive care or medication to ease the withdrawal symptoms.