Dexamethasone

I have been on steriods since the 20th started off on IV hydrocorstione when I was in hsoptial and now on Dexamethasone. I started off on 8mg a day when I left hospital and last week reduced down to 4mg. Ever since I left hospital I hardly sleep but tired all the time. I am waking up realy early in the morning and not going to sleep until late. I am also getting hot flushes. I am currently just finsihing off a course of antibiotics so not sure if the hot flushes are infection or not!

Are these side effects of the dexamethasone?