PredniSONE and sinus congestion

I had the flu and then some really bad vertigo which made me vomit. the doctor prescribed Prednisone for an inner ear infection he said I had. I guess he thought some sinus congestion may have caused this. However, the whole process has been horrible. I had night sweats which I never really considered until here. Mostly I have had very cloudy vision and continued vertigo. hard to concentrate or read. Not sure how anyone could work their job on this..unless you can work while laying down with your eyes closed..also, my throat feel like its going to slam shut and not open again. I just took my last pill. 20mg three times a day for 5 days..I hope the stuff gets out of my system quickly. wont take this again!