I had Sex With a Prostitute, do I have HIV? Im Worried I need Help?

You should be tested. There are rapid tests that can give a result in 20 minutes. It can take up to 90 days to seroconvert. That means before you would have a + test. The number of partners is relevant, but it only takes 1 to give HIV. To be on the safe side, go get tested. Based on the symptoms you described you should be tested for herpes also. There is a blood test that can detect antibodies to the Herpes virus. So it is possible to get tested even if you don't have an outbreak.