It is possible to take cough syrup while pregnant, but it is generally not recommended due to its limited effectiveness. It is better to try natural remedies such as drinking plenty of fluids or taking a teaspoon of honey. Nasal hygiene using saline solutions like Hydrasense or Sinus Rinse can also help prevent coughing by keeping nasal secretions from dripping into the throat. It is also safe to use certain nasal decongestant sprays for a short period of time during pregnancy. Make sure to consult with your pharmacist before using any medication. Get well soon!