Little Blood in sputum & left chest Pain

Last 10 months sticky sputum comes out from mouth..& left side chest pain..last two months 31/7/19 I notice blood in my sputum & left chest pain .. in 10 months I do a CT scan on last week of December which is normal..next I do echo TMT for heart which is also normal..sputum AFB & montoux test which is also negative..last 10 months I do 2 X-ray in chest on December & may which is also normal .on 4 the September I do a CT thorax with contrast which is also normal .. today on 29/9/19 I notice sputum in my blood & left chest pain aimpit pain .. my all test sugar, uria craratine,cbc, all test is nagative.. I notice my weight loses by 1-2 kgs .. please help me .. I am worried about my Heath.. also my seroconversion test is nagative (HHH)