Hi there ~
I understand your concerns. An ECG might be good to get in the light of your having a high resting heart rate
. I wonder what your blood pressure is. Bilateral effusions are not good, but they may be normal in case you have recently recovered from lung infections or pneumonia
. I also think that the yawning is due to low oxygen
or high carbon dioxide in your system due to chronic heart lung disease. I would like for you to visit with a doctor as soon as possible.
Take care and have a lovely day!