Hello. Very Good morning. I'm Dr.Yogesh Kr Sharma. As per your history given, you are suffering from common cold and upper respiratory tract infection since 7 days and now the infection has been transmitted to lower respiratory tract or you can say, chest infection. You need a course of an antibiotics for atleast initially for 5 days and other medicines as soon as possible. Is there any breathing difficulty? Kindly come to practo chat for your treatment part. Regards.