Renee, there are some cough medicines that are Cat A, which means you can use them in pregnancy. You will need your pharmacist to look up which ones in eMims. Ask for one that has a "mucolytic" in it, as it breaks up the phlegm and makes it easier to come out. I researched this early on as I had a chest infection and didn't want to develop full blown bronchitis (as I am wont to do).