I have been sick for a week. Fatigue, malaise, tired, achy like I have the flu, but I have NO flu symptoms, like stomach related, fever, respiratory, etc. Could it be a virus? Also, I have had sarcoidosis in the past. I have the flu-feeling symptoms I listed when I had active sarcoidosis. However, I had many more severe symptoms. I now feel like I did when I was sick with sarcoidosis, although, without the severity. I m not sure what to do. I just feel bad and can only do a few things and have to rest.