Hi Welcome to HCM I have gone through your query regarding your multiple problems .It is indeed a matter of concern . Its good that you got done all scans done to remove any doubt about your health . But dear , you have not mentioned your age , ht., wt., life style and when you suffered from pleurisy in the past .All info is essential for any diagnosis . Any way , for your info , if your all scan reports are found ok ,actually there is nothing serious to be worried about . It is good nothing is found in the tests . The present problems like backache - body ache allover may be due to some exertions. or overuse or improper use of muscles -wrong postures or some fever, faulty food habits and faulty life style . For sound health , you need to take proper balanced food regularly - more of fibers , protein ,vitamins ,minerals in natural form , lot of water and supplements full of antioxidants --lemon in water ,bitter gourd juice 20 ml , Aloe vera juive 25 ml + Amla juice 2 spoons turmeric powder a t spoon with a cup of hot milk , & proper ,regular walk exercise ,yoga ,pranayam to help strengthen immunity and for resistance from diseases to live happy healthy peaceful life Avoid mental stress ,worry ,anger ,fried ,fast foods tea ,coffee , Alcohol and constipation . If regularly followed above regimen ,has no side effects and goes with all therapies of treatment and all your health problems will be solved . For fever , chest & all pain you can take homeopathic Aconite 30 / 1/2 hourly 3 doses / 2 days and Bryonia 30 / 6 hourly /3 days .will help . Hope this helps solve your query Take care .All the best Dont hesitate to get back if have any further query .