Sore throat

Katrina • Married for 6 years and just found out we are expecting our first!!! Excited, nervous and anxious. 5 more months!
What can I take that is safe? My doctor said Robutussin DM for cough and only to take if I absolutely need it. But I want to stop whatever this is now before it gets worse. Would it be okay to take for a sore throat?