I always had cough problem but I never had serious health conditions few days back I had chronic dry cough and sometimes with white mucus. Yesterday in night I had 3 antibiotics and 2 syrups benadryl while sleeping after I woke up in the morning there was a sound of phlegm in chest, when I first cough, there was a liquid phlegm and light blood in there and I deliberately cough more to spit out the blood with phlegm, after few cough it in gone what to do?