Try some eucalyptus oil, it will help with the congestion. I just went through the whole sinus and ear infection with bronchitis thing last week. It was horrible! But dr gave me a z-pack and literally like 2days later i started feeling WAY better.
Also they sell these things that you drop in the bottom of the shower they dissolve releasing a vapor, between that and the steam from the shower it helped a lot too
I went to the doc today for a sinus infection, bronchitis and ear infection :/ they gave me antibiotics for the infections and mucinex for the bronchitis. How far are you? They said because I was in third trimester that it was safer to take antibiotics.
She will probably give you medication that is safe to take while pregnant..