This is from the book of medications my doctor gave me that are safe during pregnancy:
Dextromethorphan Syrup (Benylin, Balminil)
Throat lozenges are fine
Acetaminophen (Tylenol, Atasol)
Nasal Spray saline solution (Salinex)
You can used Xylomethazoline (otrivin) or oxymethazoline (Dristan) for up to 3 days.
If it's allergies Claratin and Reactin are fine as well