I've been prescribed antibiotics for a chest infection and have taken 6 of the course so far.
I have improved in my general health - not feeling as bad temperature wise, headache etc.
My cough was very very bad last night and I couldn't sleep, now this morning I'm coughing up alot of phlegm - its watery but sometimes thick and I swallow it down.
As I've been laying here on the sofa I've heard a crackling sound in my chest as I breathe in and out but mainly exhaling. It feels like snap crackle and pop - thats the only way I can describe it - the sound of when you add milk to rice crispies.

I'm really worried something bad is going on - online it says symptoms should improve within 24-48 hours of taking antibiotics.
I know I have another 4 days worth to take but what if theres something worse? I keep thinking I have a deeper issue like cancer and its affecting my immune system and how I fight off viruses.

Has anybody else had anything similar? Should I go back to the docs?