Question for Mobile Home Care Service

I had an exposure since around late September 2015 in Uganda after 1week i test for hiv i was negative around late December I tested again negative then around late June i feel some sick nd lately i test December 2017 it was seronagative but still am feeling some symptoms is my results conclusive can you have hiv symtomps after 1year and 4months am confused have long sore throat nd lym node