Hello Approximately 50-70% of infected individuals experience an ACUTE SYNDROME following primary infection . The acute syndrome follows infection by 2-6 weeks . It have multiple clinical features , lasted 1-2 weeks , and resolves spontaneously as an immune response to HIV develops and the viral load diminishes from its peak levels . Most patient will then enter a phase of clinical latency , although an occasional patient will experience rapidly progressive immunologic and clinical deterioration. These symptoms are : fever, pharyngitis, lymphadenopathy, headache/retro-orbital pain ( behind eyes), arthralgias/myalgias, lethragy/malaise, anorexia/ weight loss, nausea/vomiting/diarrhea. Erythematous macupapular rashes, mucocutaneous ulceration ( on tongue and in mouth). As most of these symptoms , you are having. Now get in p24 nucleic acid amplification ( pcr rna ) test as early as possible because 2 weeks passed after initial infection. Just for precaution take ANTIVIRAL TREATMENT ( a combination of zidovudin+lamivudin) after consultation with a physician . Hope this will help you. However constipation may be due to anorexia and stress .