First of all welcome on Practo..Your x-ray seems Lt lower lobe mild Plural effusion..Now it's.not confirmed..because it's may be seen like this due to shadow , when u took this photo from your cell phone...It's not shooted in fully inspired condition?? Second your haemogram is normal...
U may get relief with mild corticosteroid..
Just go for HRCT of Thorax if your cough persistent..For better evaluation of your lungs..
Next Steps
Consult doctor online or in person..
HRCT chest
Health Tips
Pure Natural Honey with Turmeric Powder
Avoid AC as per as possible