Third Trimester Cough and Congestion Meds??

Kaitlin • Together since September 2008, married October 25, 2014. Pregnant with baby number one, due January 2016! :-) ♡
Can anyone lead me in the right direction? I'm 30 weeks sick as a dog and my doctor never called me back and it's now the weekend so I won't get an answer until Monday, but nights are nearly unbearable with the coughing. Help please?