Your probably all tired of my questions by now, guess I'm I worry wart. But thanks to all of you who have eased many of my problems. I've been on Levaquin for 4 days for a uti. The last 3 days when I'm laying down I have this popping/crackling noise in my upper chest almost in my throat. I've been getting a little short of breath at times too. I've had this before when I was receiving radiation & chemo, but it went away. I had a ct yesterday and will see my doctor tomorrow. Needless to say I'm worring myself over this. Could it possibly be pneumonia or pleural effusion? I don't have a cough or any chest pain.