My father is post covid patient and under treatment his D-dimer goes high almost,WBC 44000,and CRP is high. In covid time he is hospitalised in govt hospital and after that his also goes down around 80 than again hospitalised in private hospital in icu ward . Right now his d- dimer is 1200, wbc 14000 and crp almost control level.but under treatment doctor told me that he is suffering from also pleural effusion .after all test and CT scan angiography it cleared that he suffering pleural effusion after diagnosed . And through thoracentisis process they remove fluid also might be 200ml and told me I remove full fluid. And no any infection on that Fluid after lab test .now after few days they told me again little fluid in the lungs .medication is start but I want to know that through medicine fluid will remove or through niddle . I extremely worried . Plz suggest me