I don't know whether you have enlarged lymph nodes or not. But your health care provider apparently believes you do not and says you have nothing to worry about, and I cannot and will not try to question that judgment. Compared to your doctor's judgment, what you think you can see or feel is irrelevant. In any case, whatever is going on, if anything, it isn't HIV. The HIV blood test is a far more accurate indicator of HIV infection than are your symptoms.
Bottom line: Mellow out, stop checking yourself, and trust your doctor.
HHH, MD
Just relax, your test at 5 months is conclusive that you dont have HIV.