Thanks for your question on Healthcare Magic.
I can understand your concern.
Hodgkins
lymphoma can spread to lungs and heart and can cause
pleural effusion and
pericardial effusion respectively.
Both of these can cause similar symptoms like sinking of heart.
So better to get done chest x ray and 2d echo.
Chest x ray is needed to rule out pleural effusion.
2d echo is needed for pericardial effusion.
If both these are normal then no need to worry for any major heart or lung related diseases.
Sometimes,
stress and
anxiety can also cause similar symptoms.
So avoid stress and tension, be relax and calm.
Don't worry, you will be alright but first rule out heart and lung diseases.
Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks.