I had protected sex with a male sex worker. The condom did not break and he did not ejaculate inside my body. But the lymph nodes under both of my armpits became swollen about 6 weeks after the encounter. At the same time, my dentist discovered that I had an abscessed tooth and I needed a root canal. The lymph nodes under the armpits went back to normal soon after the dental infection had been taken care of. But a couple of weeks after that, they began to swell up again. The doctor gave me a dosage of antibiotics (bactrim) and the lymph nodes went back to normal very quickly. My question: would the lymph nodes respond so well to antibiotics if they were swollen because of hiv?