I'm not too sure what you're taking exactly. I know it's slang, but for what is the debate. I believe it's a slang of Roxicet, and this is a Class C drug. It's unknown if it causes birth defects. You need to speak to your doctor and get yourself off of these, immediately.
How far along are you? It can also cause breathing problems in newborns, as well as withdrawal symptoms.
NO IT DOES NOT CAUSE ANY HARM TO YOUR BABY.