Hello Doctor, Need Help Or Advice, In 2006-2007, I Being

Hello Doctor,
Need help or advice, In 2006-2007, I being to abroad for an year and there i had sex with sex worker couple of times you can say its protected one as used condoms most of the time. but as the time has passed do you think is there any chances for HIV. I was worried so i done HIV ELISA test yesterday and the results came on the same day as it took 3-4 hours as per pathology lab guy.
And its shows negative with 0.04 value and the reference range was given =0.25 -positive so can you please help me, its almost 7 years gone so is there any chance for the HIV virus to develop. Should i go for any another further tests ?? Pls help Thanks