<s>[INST] Woke up in the middle of the night ill. I had sweated thru the sheets & pillow case. No fever but chest congestion & sore throat. 3 hours later I was awakened with a very bad headache & 103 degree fever added to my symptoms. I was fine when I went to bed. [/INST] Thanks for your question on Health Care Magic. I can understand your concern. Your all symptoms are of sudden origin and at middle of night. So we should first rule out heart diseases like heart failure or angina first. So get done ecg and 2d echo. If both are normal then no need to worry much for heart diseases. Lung infection like pneumonia can also cause sweating, chest congestion etc. So also get done chest x ray to rule out pneumonia. So better to first diagnose yourself and then start appropriate treatment. Don't worry, you will be alright. Hope I have solved your query. Wish you good health. Thanks. </s>