It is abnormal to test repeatedly, so any more testing will indicate HIV phobia which requires therapy to resolve. 4gen is conclusive at 4 weeks so you need to move on. You don't understand what lymph is supposed to feel like so shouldn't be poking around because that can only cause you to scare yourself when you make a wild guess that you noticed something.
You got lucky with a reckless csw, so next time do not have sex unless the csw insists, otherwise she may be positive and not using a condom to save money.
you've tested negative more than once, and your tests are conclusive. you do not need to test more. it wasnt missed, you don't have HIV. your symptoms do not matter, and waiting for symptoms is not a good indicator of HIV, it can only be diagnosed by testing.