Conversation: The conversation between human and AI assistant.
[|Human|] pressure or fullness in the sternum; periodic difficulty (slight) breathing; a little light headed; bowels are loose and have been occurring 5-6 times a day for the last 3 days. No history of heart trouble. Unexplained Plural effusion (small) occurred 20 months ago.
[|AI|]  Thanks for your question on Chat Doctor. I can understand your concern. All your symptoms (Heaviness in chest, breathing difficulty, pleural effusion) are suggestive of heart diseases. So get done ECG, 2d echo and stress test (trade mill test). If all these are normal then no need to worry about heart diseases. Avoid stress and tension, be relaxed and calm.Don't worry, you will be alright but first rule out heart diseases. Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks.