Question: what pills can you not take while pregnant?
Answer: Bismuth subsalicylate (such as Pepto-Bismol).
Phenylephrine or pseudoephedrine, which are decongestants. ... 
Cough and cold medicines that contain guaifenesin. ... 
Pain medicines like aspirin and ibuprofen (such as Advil and Motrin) and naproxen (such as Aleve).