I am prescribed opana 40 mg er for prior back injuries. Is it safe in small doses to take during pregnancy?

Your doctor, knowing you are pregnant, prescribed this pain med for you? Why don't you trust your doctor's advice on this.

Your doctor not only knows your medical history, but your history during pregnancy. He/she can also run any test required to give you the best medical advice he/she can. We can't do that.

Talk to your doctor about this.