I think I've pulled a muscle or strained when coughing. I've tried a stream inhaler cup today don't think it's helped but my chest and cough don't seem to be improving, should I wait another day or two before going back? Had a really bad night not a lot of sleep. I woke at one point choking on mucus that I couldn't cough up add to jump out of bed open the window and take my venolin 5 times, the rest of the night was mostly sat in bed coughing myself back to sleep. The steam cup has helped my runny nose. Sorry to moan just a bit scary!