How can I get my voice to sing high tone again?

Recently I had 2 wks of bronchitis and my voice has been slightly rough and about last week i could finally get my full voice back with all it's pitches and tones just can't get to a high tone or a high tone, like my voice loses itself again or I just blow air and nothing comes out. It's getting frustrating, even if I scream you won't hear anything no high pitch tones come out of my voice. I also still have some mucus in my throat since I'm still a little bit sick. :( Will I ever gain all my voice back and can sing again?