Most drugs can affect an unborn child. Use of anabolic androgenic steroids is definitely not recommended if you are considering pregnancy or are pregnant. Not only are women less likely to become pregnant if they are using anabolic androgenic steroids but if already pregnant these steroids may cause the development of male secondary sex characteristics in a female foetus.
It is recommended that women check with their doctor (or other health professional) if they are using or planning to use drugs while pregnant or breastfeeding, including prescribed and over-the-counter medicines.