I have red bumpy clear watery rashes. been having flu and fever. it's spreading very fast. it's painful.

Perhaps shingles: There is not enough information to be sure of what you have but being sick and having a watery rash spreading and painful could be shingles which is a reactivation of the chickenpox virus which happens when the immune system is down. With flu symptoms and a fever and A rash you should see a physician now as you need medication for both at this time as well as a definite diagnosis.