Sorry you aren't feeling well. Another possibility could be Thyroid disease. The same symptoms you discribe, frequently happened to me before I was diagnosed with hyper thyroidism and received treatment. Other symptoms were a racing heartbeat, shaky hands, and "buggy" or protruding eyes.
Although I never noticed my eyes, other people did, and they kept telling me to go get some tests. But, the sweating profusly and feeling I was going to faint, were the dominant symptoms. Please see a doctor soon. And I hope you feel better!