its a common side effect of steroids
to put on weight. However, with tapering of the treatment, it shall be an opportunity for you to go om a weight losing scheme. I am afraid you shall just need to be patient to meet your cardiologist. Checking your temperature is worthwhile to know whether you got fever
or not. Sweating could also be as a result of the cardiac pathology, or other causes like thyroid
or other systemic diseases or infections. I would suggest you go to the emergency service of the nearest specialized hospital for an accelerated cardiologic consultation. But if you could be patient to wait and see your cardiologist, it would be fine. A proper evaluation has to be done before appropriate drugs be prescribed to you.
Thanks hope this helps,