Hi and welcome to the forum! I am glad that I can help you.
You want to know whether you are at risk of developing HIV.
Human immunodeficiency virus (HIV) causes acquired immunodeficiency syndrome (AIDS), a condition in humans in which the immune system begins to fail, leading to life-threatening opportunistic infections. HIV infection has basically four stages: incubation period, acute infection, latency stage and AIDS. The initial incubation period upon infection is asymptomatic. It usually lasts between two and four weeks. The second stage lasts an average of 28 days. It is characterized with symptoms such as fever, swollen lymph nodes, sore throat, rash, muscle pain, malaise, mouth and esophageal sores. The latency stage shows few or no symptoms. It can last anywhere from two weeks to twenty years and beyond.
Given the data that you described, a negative HIV diagnostic test after 32 weeks (8 months) after a suspicious event, it is not likely that the symptoms that you experience are caused by an HIV infection. The shingles that you experienced may appear due to temporary weakening of the immune system, that can appear due to chronic exhaustion, poor diet, or diet in favor of losing weight, infective disease such as flu, etc. The pharyngeal infection that you experience may be a result of secondary bacterial superinfection also as a result of the weakened immune system. You may consider seeing an infectologist for further advice and information about diagnosis of the symptoms that you experience.
Please keep in mind that I provide medical information only. I am not able to diagnose medical conditions online. Please contact your doctor for further advice and information about diagnosis and treatment options.