Hi. I'm A 60 Yr Old Man On No Meds.

Hi. I'm a 60 yr old man on no meds. For the last 7 to 10 days I have been experiencing symptoms of nausea and sudden sweating with a strange taste , can't pinpoint it , from about 1 to 2 hours after waking up then close to hourly- not so much in the evening. Sleeping has been rough due to existing lower back problems but seem to get night sweats also. Any idea ?