Symptoms pf hiv are chronic diarrhoea, persistent fever, generalised weakness . frequent infection, lymphnode enlargement etc. Its all due lower immunity. If you have felt then nothing wrong in testing for hiv. Go for confirmatory test for hiv p24 antigen test is quite useful do it along with hiv 1 & 2 antibody. And your CD 4 count is very high.so nothing wrong in that.