Medication question

Rosalind • Dating my best friend! Our first baby due 8/30/15
My doctor diagnosed me with pneumonia and she keeps prescribing me medication that aren't entirely safe. She just gave me a Flovent diskus inhaler and I'm reading online that I need to weigh the pros and cons of if its worth it. Does anyone has any information that can help me out? My doctor and my ob don't seem to be very helpful