Thanks for writing your query to us.
Symptoms of heaviness in chest & abdomen needs to be evaluated. There is a possibility that you might have developed a lung infection
. Kindly get a Xray of chest (PA view) to know the exact cause for the chest heaviness. In the mean while avoid any form of exertion, take rest, have balanced diet & steam inhalation.
I hope i have answered your query.Wish you good health.