I am currently taking atripla to treat hiv, my viral load as of 5/10/12 is hiv-1, rna, ultra, pcr 39ppm; hiv-rna (10g-10) 1. 59, with a t helper (cd4) (abs) 1715, would it be recomended to change my medication to viread 300mg with lamivudine 300mg and sustiva 600mg?