Getting evaluated and tested for STDs after unprotected sex with multiple partners was exactly the right thing to do. You have now been seen by at least two doctors, tested thoroughly and examined by the doctor who was able to tell you that you do not have swollen lymph nodes. Your tests for gonorrhea, chlamydia and other STDs are conclusive both in terms of timing and in terms of the reliability of the tests. The tests you report do show that you do not have an STD-believe them and try your best to stop worrying.
As for the Lyme disease test, it may well have been a false positive test. Lyme disease tests are sometimes helpful for persons who have symptoms compatible with Lyme disease but your symptoms are not suggestive. The blood tests for Lyme disease also have a very high false positive rate so, unless there are other reasons for your to be concerned about Lyme disease that your doctor is aware of, this may not be a concern.
If you continue to have health problems work with your doctor to sort them out but do not worry that you have an STD
Hope this helps. EWH
Your risk of hepatitis froms exual transmission is verly low. There are many causes of hepatitis and this is best evaluated by your doctors.
False positive results occur for vitually all types of blood tests and have many, many causes. Even so, most false positves are un-explained. I am not an expert in Lyme Disease and suggest you discuss this with your doctor or an infectious diseases specialist who works regularly with Lyme disease. I urge you to stay off the internet in relationshiop to your lyme disease tests - there is much mis-information there. Sorry, I don't have more for you on this. EWH